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IS THERE ANY PRACTICAL PROOF FOR TIME DILATION? Is there any practical proof for time dilation? Asked by: Dharmesh Answer There are several direct proofs of time dilation. Extremely accurate clocks have been flown on jet aircraft. WHAT WILL HOLD A GREATER AMOUNT OF CHARGE, A HOLLOW METAL Answer. All else being equal, a hollow and a solid conducting sphere hold the same amount of charge . where Q is the amount of charge, C is the 'capacitance' of the capacitor and V is the voltage applied between the conducting plates or surfaces of the capacitor. In the case of an isolated conducting sphere (hollow or solid), one plateconsists
A FULL CAN AND AN EMPTY CAN ARE ROLLED DOWN A RAMP. WHAT For the empty can, 100% of the mass of the can spins as the can rolls, but for the full can, much of the liquid in the can is effectively sliding down the ramp without spinning. Thus 100% of the mass of the sliding liquid goes into translational kinetic energy, and the full can will have a greater speed. Now for in reality there will be some IS IT EASIER FOR AN AIRPLANE TO TRAVEL EAST TO WEST OR Answer. The ease with which an airplane may travel east or west depends on your definition of 'ease'. In all cases, the key is the direction of the airplane relative to the wind. In terms of safety, both scenarios are equally safe during normal flight at cruising altitude. It is safer to land and takeoff, however, into the wind HOW MUCH HYDROGEN CAN BE EXTRACTED FROM A GALLON OF WATER How much Hydrogen can be extracted from a gallon of water? Is there any reason why a fuel cell powered aquatic vehicle (boat, submarine) could not supplement the Hydrogen supplies on-board with Hydrogen extracted from sea water, thus extending their range? WHY IS IT IMPOSSIBLE TO PUMP WATER FROM VERY DEEP IN THE Why is it impossible to pump water from very deep in the ground with a surface pump? Asked by: Curt Fahey Answer The key to understanding this is realizing that suction is not a force, but simply removing an opposing force to the force of air pressure which is already there. HOW TALL DOES A MIRROR HAVE TO BE TO FIT AN ENTIRE PERSONS Answer. You can best find this answer with a newspaper and roll of tape on a full length mirror in your home. Cover all the parts of the mirror you DON'T need to see your reflection. You will see that you only need a mirror length of about 1/2 your height. This is due to the principle of reflection, which states that the angle of incidence WHY IS AN APPLE PIES SAUCE ALWAYS HOTTER THAN THE PASTRY Why is an apple pies sauce always hotter than the pastry even though they have been cooked on the same heat? Asked by: John Howells Answer WILL A LAKE FREEZE FASTER ON A WINDY DAY THAN A CALM DAY? Answer. Evaporative cooling could cause the overall temperature of a lake to cool faster on a windy day than on a still one of the same temperature. Any liquid has a thin layer of vapor over its surface, including water. This layer of gas is made up of a transient population of molecules with enough kinetic energy to separate fromthe rest of
IN NUMEROUS PHOTOS AND FILMS OF NUCLEAR EXPLOSIONS, THERE In numerous photos and films of nuclear explosions, there appear to be vertical streamers along side the fire ball/mushroom cloud. What arethey?
IS THERE ANY PRACTICAL PROOF FOR TIME DILATION? Is there any practical proof for time dilation? Asked by: Dharmesh Answer There are several direct proofs of time dilation. Extremely accurate clocks have been flown on jet aircraft. WHAT WILL HOLD A GREATER AMOUNT OF CHARGE, A HOLLOW METAL Answer. All else being equal, a hollow and a solid conducting sphere hold the same amount of charge . where Q is the amount of charge, C is the 'capacitance' of the capacitor and V is the voltage applied between the conducting plates or surfaces of the capacitor. In the case of an isolated conducting sphere (hollow or solid), one plateconsists
A FULL CAN AND AN EMPTY CAN ARE ROLLED DOWN A RAMP. WHAT For the empty can, 100% of the mass of the can spins as the can rolls, but for the full can, much of the liquid in the can is effectively sliding down the ramp without spinning. Thus 100% of the mass of the sliding liquid goes into translational kinetic energy, and the full can will have a greater speed. Now for in reality there will be some IS IT EASIER FOR AN AIRPLANE TO TRAVEL EAST TO WEST OR Answer. The ease with which an airplane may travel east or west depends on your definition of 'ease'. In all cases, the key is the direction of the airplane relative to the wind. In terms of safety, both scenarios are equally safe during normal flight at cruising altitude. It is safer to land and takeoff, however, into the wind HOW MUCH HYDROGEN CAN BE EXTRACTED FROM A GALLON OF WATER How much Hydrogen can be extracted from a gallon of water? Is there any reason why a fuel cell powered aquatic vehicle (boat, submarine) could not supplement the Hydrogen supplies on-board with Hydrogen extracted from sea water, thus extending their range? WHY IS IT IMPOSSIBLE TO PUMP WATER FROM VERY DEEP IN THE Why is it impossible to pump water from very deep in the ground with a surface pump? Asked by: Curt Fahey Answer The key to understanding this is realizing that suction is not a force, but simply removing an opposing force to the force of air pressure which is already there. HOW TALL DOES A MIRROR HAVE TO BE TO FIT AN ENTIRE PERSONS Answer. You can best find this answer with a newspaper and roll of tape on a full length mirror in your home. Cover all the parts of the mirror you DON'T need to see your reflection. You will see that you only need a mirror length of about 1/2 your height. This is due to the principle of reflection, which states that the angle of incidence WHY IS AN APPLE PIES SAUCE ALWAYS HOTTER THAN THE PASTRY Why is an apple pies sauce always hotter than the pastry even though they have been cooked on the same heat? Asked by: John Howells Answer WILL A LAKE FREEZE FASTER ON A WINDY DAY THAN A CALM DAY? Answer. Evaporative cooling could cause the overall temperature of a lake to cool faster on a windy day than on a still one of the same temperature. Any liquid has a thin layer of vapor over its surface, including water. This layer of gas is made up of a transient population of molecules with enough kinetic energy to separate fromthe rest of
IS THERE ANY MATERIAL THAT CAN BLOCK A MAGNETIC FORCE Is there any material that can block a magnetic force? Specifically does lead block magnetic fields? Asked by: Dustin Answer Magnetic fields (forces are caused by magnetic fields) cannot be blocked, no. WHAT IS MEANT WHEN ONE SAYS THAT THE TEMPERATURE OF THE What is meant when one says that the temperature of the cosmic background radiation is 3K? Asked by: Suraj Answer Any object with internal energy (a temperature above absolute zero, or 0 K) radiates that energy in the form of electromagnetic waves (light). HOW DOES A FARADAY CAGE WORK? OR, WHY CAN A SATELLITE DISH How does a Faraday Cage work? or, Why can a satellite dish have holes in it? Asked by: Undisclosed Visitor Answer In electromagnetic field theory, when one solves for the distribution of a field in and around a conducting surface, one finds that electromagnetic waves do not penetrate very far through holes that are less than about a wavelengthacross.
HOW IS LIGHT FORMED IN A LIGHT BULB? Incandescent light bulbs use a thin wire called a filament (traditionally made of tungsten, perhaps currently made of a different material) as a thermal radiation emitting body. The filament has a very tiny axial diameter (it is skinny) and therefor a fairly high resistance to current. When AC current flows through the filament itis heated
HOW CAN ONE MEASURE THE AGE OF THE UNIVERSE? How can one measure the age of the universe? Asked by: CC Answer By observing the velocity at which galaxies are spreading out in the cosmos, and the average density of visible matter (and therefore the slowing effect of gravity on the spread of galaxies) we can calculate how long it has been since these galaxies were all crammed together. IF YOU'RE IN A CAR TRAVELING AT THE SPEED OF LIGHT AND YOU If you're in a car traveling at the speed of light and you turn your headlights on, does anything happen? Asked by: Nicole Answer Your question contradicts Einstein's Special Theory of Relativity which states that no object with mass CAN travel at, or above, the speed oflight (c).
NEW SANDIA UV LEDS EMIT SHORT-WAVELENGTH, HIGH-POWER OUTPUT One emits at a wavelength of 290 nanometers (nm) and produces 1.3 milliwatts of output power, and the other emits at a wavelength of 275 nm and produces 0.4 milliwatts of power. "Emission wavelengths of 275 to 290 nm with such high power outputs is a major breakthrough in UV LEDs development," says Bob Biefeld, manager of Sandia’s Chemical IF AN ORBITING ARTIFICIAL SATELLITE WERE TO SLOW DOWN If an orbiting artificial satellite were to slow down, what would happen? Asked by: Christopher Alec Maquiling Answer Artificial satellites slow down all the time, and uniformly, they are no longer able to resist the pull of gravity and fall back to Earth. HOW DID THERMAL BLACKBODY RADIATION SPECTRUM NOT FIT How did thermal blackbody radiation spectrum not fit classical physics and what was done about it? Asked by: Kirstie Answer You are referring to the so-called 'ultraviolet catastrophe', in which classical physics predicted that the electromagnetic spectrum emitted by warm objects should show an increasing intensity at higher and higher frequencies. SAY YOU HAVE A TWIN, AND YOU GO OFF INTO SPACE, TRAVELING Say you have a twin, and you go off into space, traveling near the speed of light, when you return, will your twin have aged more? Askedby: Rusty Trump
WHAT WILL BE THE FATE OF OUR MOON? WILL IT REMAIN IN A Ask the experts your physics and astronomy questions, read answerarchive, and more.
IS THERE ANY PRACTICAL PROOF FOR TIME DILATION? Is there any practical proof for time dilation? Asked by: Dharmesh Answer There are several direct proofs of time dilation. Extremely accurate clocks have been flown on jet aircraft. WHY CAN A PERSON LAY ON A BED OF NAILS AND NOT BE INJURED Why can a person lay on a bed of nails and not be injured? What is this scientific theory called? Asked by: Marcia Answer The 'secret' to this phenomenon is first to understand that it is the force per unit area of skin (i.e., pressure) that determines if a nail will pierce the skin. The force is determined by the weight of the person lying onthe bed of nails.
IS IT EASIER FOR AN AIRPLANE TO TRAVEL EAST TO WEST OR Answer. The ease with which an airplane may travel east or west depends on your definition of 'ease'. In all cases, the key is the direction of the airplane relative to the wind. In terms of safety, both scenarios are equally safe during normal flight at cruising altitude. It is safer to land and takeoff, however, into the wind IN NUMEROUS PHOTOS AND FILMS OF NUCLEAR EXPLOSIONS, THERE 'After a certain high level of technical skill is achieved, science and art tend to coalesce in esthetics, plasticity, and form. The greatest scientists are always artists as well.' WHY IS IT IMPOSSIBLE TO PUMP WATER FROM VERY DEEP IN THE Why is it impossible to pump water from very deep in the ground with a surface pump? Asked by: Curt Fahey Answer The key to understanding this is realizing that suction is not a force, but simply removing an opposing force to the force of air pressure which is already there. WHAT IS REST MASS? HOW TO EXPLAIN IT ESPECIALLY TO THE So, quite simply, the 'rest mass' of an object is the inertial mass that an object has when it is at rest. Answered by: Warren Davis, Ph.D., President, Davis Associates, Inc., Newton, MA USA. Mass measures the amount of inertia an object has, with inertia defined as the resistance the object offers to a change in its state of motion. IS THERE ANY MATERIAL THAT CAN BLOCK A MAGNETIC FORCE Is there any material that can block a magnetic force? Specifically does lead block magnetic fields? Asked by: Dustin Answer Magnetic fields (forces are caused by magnetic fields) cannot be blocked, no. WHAT IS MEANT WHEN ONE SAYS THAT THE TEMPERATURE OF THE What is meant when one says that the temperature of the cosmic background radiation is 3K? Asked by: Suraj Answer Any object with internal energy (a temperature above absolute zero, or 0 K) radiates that energy in the form of electromagnetic waves (light). HOW TALL DOES A MIRROR HAVE TO BE TO FIT AN ENTIRE PERSONS Answer. You can best find this answer with a newspaper and roll of tape on a full length mirror in your home. Cover all the parts of the mirror you DON'T need to see your reflection. You will see that you only need a mirror length of about 1/2 your height. This is due to the principle of reflection, which states that the angle of incidence WHAT WILL BE THE FATE OF OUR MOON? WILL IT REMAIN IN A Ask the experts your physics and astronomy questions, read answerarchive, and more.
IS THERE ANY PRACTICAL PROOF FOR TIME DILATION? Is there any practical proof for time dilation? Asked by: Dharmesh Answer There are several direct proofs of time dilation. Extremely accurate clocks have been flown on jet aircraft. WHY CAN A PERSON LAY ON A BED OF NAILS AND NOT BE INJURED Why can a person lay on a bed of nails and not be injured? What is this scientific theory called? Asked by: Marcia Answer The 'secret' to this phenomenon is first to understand that it is the force per unit area of skin (i.e., pressure) that determines if a nail will pierce the skin. The force is determined by the weight of the person lying onthe bed of nails.
IS IT EASIER FOR AN AIRPLANE TO TRAVEL EAST TO WEST OR Answer. The ease with which an airplane may travel east or west depends on your definition of 'ease'. In all cases, the key is the direction of the airplane relative to the wind. In terms of safety, both scenarios are equally safe during normal flight at cruising altitude. It is safer to land and takeoff, however, into the wind IN NUMEROUS PHOTOS AND FILMS OF NUCLEAR EXPLOSIONS, THERE 'After a certain high level of technical skill is achieved, science and art tend to coalesce in esthetics, plasticity, and form. The greatest scientists are always artists as well.' WHY IS IT IMPOSSIBLE TO PUMP WATER FROM VERY DEEP IN THE Why is it impossible to pump water from very deep in the ground with a surface pump? Asked by: Curt Fahey Answer The key to understanding this is realizing that suction is not a force, but simply removing an opposing force to the force of air pressure which is already there. WHAT IS REST MASS? HOW TO EXPLAIN IT ESPECIALLY TO THE So, quite simply, the 'rest mass' of an object is the inertial mass that an object has when it is at rest. Answered by: Warren Davis, Ph.D., President, Davis Associates, Inc., Newton, MA USA. Mass measures the amount of inertia an object has, with inertia defined as the resistance the object offers to a change in its state of motion. IS THERE ANY MATERIAL THAT CAN BLOCK A MAGNETIC FORCE Is there any material that can block a magnetic force? Specifically does lead block magnetic fields? Asked by: Dustin Answer Magnetic fields (forces are caused by magnetic fields) cannot be blocked, no. WHAT IS MEANT WHEN ONE SAYS THAT THE TEMPERATURE OF THE What is meant when one says that the temperature of the cosmic background radiation is 3K? Asked by: Suraj Answer Any object with internal energy (a temperature above absolute zero, or 0 K) radiates that energy in the form of electromagnetic waves (light). HOW TALL DOES A MIRROR HAVE TO BE TO FIT AN ENTIRE PERSONS Answer. You can best find this answer with a newspaper and roll of tape on a full length mirror in your home. Cover all the parts of the mirror you DON'T need to see your reflection. You will see that you only need a mirror length of about 1/2 your height. This is due to the principle of reflection, which states that the angle of incidence WHAT WILL HOLD A GREATER AMOUNT OF CHARGE, A HOLLOW METAL Answer. All else being equal, a hollow and a solid conducting sphere hold the same amount of charge . where Q is the amount of charge, C is the 'capacitance' of the capacitor and V is the voltage applied between the conducting plates or surfaces of the capacitor. In the case of an isolated conducting sphere (hollow or solid), one plateconsists
A FULL CAN AND AN EMPTY CAN ARE ROLLED DOWN A RAMP. WHAT For the empty can, 100% of the mass of the can spins as the can rolls, but for the full can, much of the liquid in the can is effectively sliding down the ramp without spinning. Thus 100% of the mass of the sliding liquid goes into translational kinetic energy, and the full can will have a greater speed. Now for in reality there will be some IS IT EASIER FOR AN AIRPLANE TO TRAVEL EAST TO WEST OR Answer. The ease with which an airplane may travel east or west depends on your definition of 'ease'. In all cases, the key is the direction of the airplane relative to the wind. In terms of safety, both scenarios are equally safe during normal flight at cruising altitude. It is safer to land and takeoff, however, into the wind IS THERE ANY MATERIAL THAT CAN BLOCK A MAGNETIC FORCE Is there any material that can block a magnetic force? Specifically does lead block magnetic fields? Asked by: Dustin Answer Magnetic fields (forces are caused by magnetic fields) cannot be blocked, no. HOW DID THE EARTH COME TO HAVE A MOLTEN IRON CORE? Four and a half billion years ago, Earth (and the other planets in the Solar System) formed when smaller bits of matter in solar orbit came together gravitationally. As a result of those multiple collisions the kinetic energy of motion was converted to heat energy, resulting in a hot, molten mass that would become our Earth. While in this hot NEW SANDIA UV LEDS EMIT SHORT-WAVELENGTH, HIGH-POWER OUTPUT One emits at a wavelength of 290 nanometers (nm) and produces 1.3 milliwatts of output power, and the other emits at a wavelength of 275 nm and produces 0.4 milliwatts of power. "Emission wavelengths of 275 to 290 nm with such high power outputs is a major breakthrough in UV LEDs development," says Bob Biefeld, manager of Sandia’s Chemical SAY YOU HAVE A TWIN, AND YOU GO OFF INTO SPACE, TRAVELING Say you have a twin, and you go off into space, traveling near the speed of light, when you return, will your twin have aged more? Askedby: Rusty Trump
IF IT WAS POSSIBLE TO TRAVEL FASTER THEN THE SPEED OF If it was possible to travel faster than the speed of light, would time reverse itself (like backwards time travel) or just not exist?Asked by: Nicole
WHY IS AN APPLE PIES SAUCE ALWAYS HOTTER THAN THE PASTRY Why is an apple pies sauce always hotter than the pastry even though they have been cooked on the same heat? Asked by: John Howells Answer WHEN A MERCURY THERMOMETER IS IMMERSED IN A HOT LIQUID When a mercury thermometer is immersed in a hot liquid, the mercury level goes down at first and then goes up. Why? Asked by: Bernie Novoa WHAT IS MEANT WHEN ONE SAYS THAT THE TEMPERATURE OF THE What is meant when one says that the temperature of the cosmic background radiation is 3K? Asked by: Suraj Answer Any object with internal energy (a temperature above absolute zero, or 0 K) radiates that energy in the form of electromagnetic waves (light). IS THERE ANY PRACTICAL PROOF FOR TIME DILATION? Is there any practical proof for time dilation? Asked by: Dharmesh Answer There are several direct proofs of time dilation. Extremely accurate clocks have been flown on jet aircraft. IF YOU HOVER ANY DISTANCE ABOVE THE EARTH (IN A HELICOPTER If you hover any distance above the earth (in a helicopter, for example) for a day or so, why aren't you and the helicopter occupants on the other side of the world if the Earth is going through itsnormal revolution?
WHY IS IT IMPOSSIBLE TO PUMP WATER FROM VERY DEEP IN THE Why is it impossible to pump water from very deep in the ground with a surface pump? Asked by: Curt Fahey Answer The key to understanding this is realizing that suction is not a force, but simply removing an opposing force to the force of air pressure which is already there. HOW MUCH HYDROGEN CAN BE EXTRACTED FROM A GALLON OF WATER How much Hydrogen can be extracted from a gallon of water? Is there any reason why a fuel cell powered aquatic vehicle (boat, submarine) could not supplement the Hydrogen supplies on-board with Hydrogen extracted from sea water, thus extending their range? IS IT EASIER FOR AN AIRPLANE TO TRAVEL EAST TO WEST OR Is it easier for an airplane to travel East to West or West to East? Asked by: Andy McGlen Answer The ease with which an airplane may travel east or west depends on your definition of 'ease'. HOW TALL DOES A MIRROR HAVE TO BE TO FIT AN ENTIRE PERSONS Ask the experts your physics and astronomy questions, read answerarchive, and more.
WHERE IS MERCURY FOUND IN THE WORLD? Where is mercury found in the world? Asked by: William Answer Mercury (atomic symbol Hg) is a liquid at room temperature. Finding large pools of the element is for all purposes impossible, and finding it in its native state is also fairly rare. WHY IS AN APPLE PIES SAUCE ALWAYS HOTTER THAN THE PASTRY Why is an apple pies sauce always hotter than the pastry even though they have been cooked on the same heat? Asked by: John Howells Answer WILL A LAKE FREEZE FASTER ON A WINDY DAY THAN A CALM DAY? Will a lake freeze faster on a windy day than a calm day? Asked by: Ken Morgan Answer Evaporative cooling could cause the overall temperature of a lake to cool faster on a windy day than on a still one of the same temperature. WHAT IS MEANT WHEN ONE SAYS THAT THE TEMPERATURE OF THE What is meant when one says that the temperature of the cosmic background radiation is 3K? Asked by: Suraj Answer Any object with internal energy (a temperature above absolute zero, or 0 K) radiates that energy in the form of electromagnetic waves (light). IS THERE ANY PRACTICAL PROOF FOR TIME DILATION? Is there any practical proof for time dilation? Asked by: Dharmesh Answer There are several direct proofs of time dilation. Extremely accurate clocks have been flown on jet aircraft. IF YOU HOVER ANY DISTANCE ABOVE THE EARTH (IN A HELICOPTER If you hover any distance above the earth (in a helicopter, for example) for a day or so, why aren't you and the helicopter occupants on the other side of the world if the Earth is going through itsnormal revolution?
WHY IS IT IMPOSSIBLE TO PUMP WATER FROM VERY DEEP IN THE Why is it impossible to pump water from very deep in the ground with a surface pump? Asked by: Curt Fahey Answer The key to understanding this is realizing that suction is not a force, but simply removing an opposing force to the force of air pressure which is already there. HOW MUCH HYDROGEN CAN BE EXTRACTED FROM A GALLON OF WATER How much Hydrogen can be extracted from a gallon of water? Is there any reason why a fuel cell powered aquatic vehicle (boat, submarine) could not supplement the Hydrogen supplies on-board with Hydrogen extracted from sea water, thus extending their range? IS IT EASIER FOR AN AIRPLANE TO TRAVEL EAST TO WEST OR Is it easier for an airplane to travel East to West or West to East? Asked by: Andy McGlen Answer The ease with which an airplane may travel east or west depends on your definition of 'ease'. HOW TALL DOES A MIRROR HAVE TO BE TO FIT AN ENTIRE PERSONS Ask the experts your physics and astronomy questions, read answerarchive, and more.
WHERE IS MERCURY FOUND IN THE WORLD? Where is mercury found in the world? Asked by: William Answer Mercury (atomic symbol Hg) is a liquid at room temperature. Finding large pools of the element is for all purposes impossible, and finding it in its native state is also fairly rare. WHY IS AN APPLE PIES SAUCE ALWAYS HOTTER THAN THE PASTRY Why is an apple pies sauce always hotter than the pastry even though they have been cooked on the same heat? Asked by: John Howells Answer WILL A LAKE FREEZE FASTER ON A WINDY DAY THAN A CALM DAY? Will a lake freeze faster on a windy day than a calm day? Asked by: Ken Morgan Answer Evaporative cooling could cause the overall temperature of a lake to cool faster on a windy day than on a still one of the same temperature. WHAT WILL HOLD A GREATER AMOUNT OF CHARGE, A HOLLOW METAL What will hold a greater amount of charge, a hollow metal sphere or a solid metal sphere? Asked by: Matthew Lammens Answer All else being equal, a hollow and a solid conducting sphere hold the same amount of charge. The amount of charge held by a capacitor is given by IS IT EASIER FOR AN AIRPLANE TO TRAVEL EAST TO WEST OR Is it easier for an airplane to travel East to West or West to East? Asked by: Andy McGlen Answer The ease with which an airplane may travel east or west depends on your definition of 'ease'. HOW MUCH HYDROGEN CAN BE EXTRACTED FROM A GALLON OF WATER How much Hydrogen can be extracted from a gallon of water? Is there any reason why a fuel cell powered aquatic vehicle (boat, submarine) could not supplement the Hydrogen supplies on-board with Hydrogen extracted from sea water, thus extending their range? WHY CAN A PERSON LAY ON A BED OF NAILS AND NOT BE INJURED Why can a person lay on a bed of nails and not be injured? What is this scientific theory called? Asked by: Marcia Answer The 'secret' to this phenomenon is first to understand that it is the force per unit area of skin (i.e., pressure) that determines if a nail will pierce the skin. The force is determined by the weight of the person lying onthe bed of nails.
WHERE IS MERCURY FOUND IN THE WORLD? Where is mercury found in the world? Asked by: William Answer Mercury (atomic symbol Hg) is a liquid at room temperature. Finding large pools of the element is for all purposes impossible, and finding it in its native state is also fairly rare. A FULL CAN AND AN EMPTY CAN ARE ROLLED DOWN A RAMP. WHAT A full can and an empty can are rolled down a ramp. What happens and why? Asked by: Lei Bao Answer The full can will roll faster than the empty can and reach the bottom of the ramp first. IF YOU'RE IN A CAR TRAVELING AT THE SPEED OF LIGHT AND YOU If you're in a car traveling at the speed of light and you turn your headlights on, does anything happen? Asked by: Nicole Answer Your question contradicts Einstein's Special Theory of Relativity which states that no object with mass CAN travel at, or above, the speed oflight (c).
IS THERE ANY MATERIAL THAT CAN BLOCK A MAGNETIC FORCE Is there any material that can block a magnetic force? Specifically does lead block magnetic fields? Asked by: Dustin Answer Magnetic fields (forces are caused by magnetic fields) cannot be blocked, no. WILL A LAKE FREEZE FASTER ON A WINDY DAY THAN A CALM DAY? Will a lake freeze faster on a windy day than a calm day? Asked by: Ken Morgan Answer Evaporative cooling could cause the overall temperature of a lake to cool faster on a windy day than on a still one of the same temperature. WHAT IS THE SIGNIFICANCE OF THE NUMBER 137 IN PHYSICS? What is the significance of the number 137 in physics? Asked by: Undisclosed Sender Answer The importance of the number 137 is that it is related to the so-called 'fine WHY CAN A PERSON LAY ON A BED OF NAILS AND NOT BE INJURED Why can a person lay on a bed of nails and not be injured? What is this scientific theory called? Asked by: Marcia Answer The 'secret' to this phenomenon is first to understand that it is the force per unit area of skin (i.e., pressure) that determines if a nail will pierce the skin. The force is determined by the weight of the person lying onthe bed of nails.
IS THERE ANY PRACTICAL PROOF FOR TIME DILATION? Is there any practical proof for time dilation? Asked by: Dharmesh Answer There are several direct proofs of time dilation. Extremely accurate clocks have been flown on jet aircraft. WHAT WILL BE THE FATE OF OUR MOON? WILL IT REMAIN IN A Ask the experts your physics and astronomy questions, read answerarchive, and more.
IS IT EASIER FOR AN AIRPLANE TO TRAVEL EAST TO WEST OR Answer. The ease with which an airplane may travel east or west depends on your definition of 'ease'. In all cases, the key is the direction of the airplane relative to the wind. In terms of safety, both scenarios are equally safe during normal flight at cruising altitude. It is safer to land and takeoff, however, into the wind IN NUMEROUS PHOTOS AND FILMS OF NUCLEAR EXPLOSIONS, THERE 'After a certain high level of technical skill is achieved, science and art tend to coalesce in esthetics, plasticity, and form. The greatest scientists are always artists as well.' WHAT IS MEANT WHEN ONE SAYS THAT THE TEMPERATURE OF THE What is meant when one says that the temperature of the cosmic background radiation is 3K? Asked by: Suraj Answer Any object with internal energy (a temperature above absolute zero, or 0 K) radiates that energy in the form of electromagnetic waves (light). WHY IS IT IMPOSSIBLE TO PUMP WATER FROM VERY DEEP IN THE Why is it impossible to pump water from very deep in the ground with a surface pump? Asked by: Curt Fahey Answer The key to understanding this is realizing that suction is not a force, but simply removing an opposing force to the force of air pressure which is already there. WHAT IS REST MASS? HOW TO EXPLAIN IT ESPECIALLY TO THE So, quite simply, the 'rest mass' of an object is the inertial mass that an object has when it is at rest. Answered by: Warren Davis, Ph.D., President, Davis Associates, Inc., Newton, MA USA. Mass measures the amount of inertia an object has, with inertia defined as the resistance the object offers to a change in its state of motion. IS THERE ANY MATERIAL THAT CAN BLOCK A MAGNETIC FORCE Is there any material that can block a magnetic force? Specifically does lead block magnetic fields? Asked by: Dustin Answer Magnetic fields (forces are caused by magnetic fields) cannot be blocked, no. HOW TALL DOES A MIRROR HAVE TO BE TO FIT AN ENTIRE PERSONS Answer. You can best find this answer with a newspaper and roll of tape on a full length mirror in your home. Cover all the parts of the mirror you DON'T need to see your reflection. You will see that you only need a mirror length of about 1/2 your height. This is due to the principle of reflection, which states that the angle of incidence WHY CAN A PERSON LAY ON A BED OF NAILS AND NOT BE INJURED Why can a person lay on a bed of nails and not be injured? What is this scientific theory called? Asked by: Marcia Answer The 'secret' to this phenomenon is first to understand that it is the force per unit area of skin (i.e., pressure) that determines if a nail will pierce the skin. The force is determined by the weight of the person lying onthe bed of nails.
IS THERE ANY PRACTICAL PROOF FOR TIME DILATION? Is there any practical proof for time dilation? Asked by: Dharmesh Answer There are several direct proofs of time dilation. Extremely accurate clocks have been flown on jet aircraft. WHAT WILL BE THE FATE OF OUR MOON? WILL IT REMAIN IN A Ask the experts your physics and astronomy questions, read answerarchive, and more.
IS IT EASIER FOR AN AIRPLANE TO TRAVEL EAST TO WEST OR Answer. The ease with which an airplane may travel east or west depends on your definition of 'ease'. In all cases, the key is the direction of the airplane relative to the wind. In terms of safety, both scenarios are equally safe during normal flight at cruising altitude. It is safer to land and takeoff, however, into the wind IN NUMEROUS PHOTOS AND FILMS OF NUCLEAR EXPLOSIONS, THERE 'After a certain high level of technical skill is achieved, science and art tend to coalesce in esthetics, plasticity, and form. The greatest scientists are always artists as well.' WHAT IS MEANT WHEN ONE SAYS THAT THE TEMPERATURE OF THE What is meant when one says that the temperature of the cosmic background radiation is 3K? Asked by: Suraj Answer Any object with internal energy (a temperature above absolute zero, or 0 K) radiates that energy in the form of electromagnetic waves (light). WHY IS IT IMPOSSIBLE TO PUMP WATER FROM VERY DEEP IN THE Why is it impossible to pump water from very deep in the ground with a surface pump? Asked by: Curt Fahey Answer The key to understanding this is realizing that suction is not a force, but simply removing an opposing force to the force of air pressure which is already there. WHAT IS REST MASS? HOW TO EXPLAIN IT ESPECIALLY TO THE So, quite simply, the 'rest mass' of an object is the inertial mass that an object has when it is at rest. Answered by: Warren Davis, Ph.D., President, Davis Associates, Inc., Newton, MA USA. Mass measures the amount of inertia an object has, with inertia defined as the resistance the object offers to a change in its state of motion. IS THERE ANY MATERIAL THAT CAN BLOCK A MAGNETIC FORCE Is there any material that can block a magnetic force? Specifically does lead block magnetic fields? Asked by: Dustin Answer Magnetic fields (forces are caused by magnetic fields) cannot be blocked, no. HOW TALL DOES A MIRROR HAVE TO BE TO FIT AN ENTIRE PERSONS Answer. You can best find this answer with a newspaper and roll of tape on a full length mirror in your home. Cover all the parts of the mirror you DON'T need to see your reflection. You will see that you only need a mirror length of about 1/2 your height. This is due to the principle of reflection, which states that the angle of incidence WHAT WILL HOLD A GREATER AMOUNT OF CHARGE, A HOLLOW METAL Answer. All else being equal, a hollow and a solid conducting sphere hold the same amount of charge . where Q is the amount of charge, C is the 'capacitance' of the capacitor and V is the voltage applied between the conducting plates or surfaces of the capacitor. In the case of an isolated conducting sphere (hollow or solid), one plateconsists
A FULL CAN AND AN EMPTY CAN ARE ROLLED DOWN A RAMP. WHAT For the empty can, 100% of the mass of the can spins as the can rolls, but for the full can, much of the liquid in the can is effectively sliding down the ramp without spinning. Thus 100% of the mass of the sliding liquid goes into translational kinetic energy, and the full can will have a greater speed. Now for in reality there will be some IS IT EASIER FOR AN AIRPLANE TO TRAVEL EAST TO WEST OR Answer. The ease with which an airplane may travel east or west depends on your definition of 'ease'. In all cases, the key is the direction of the airplane relative to the wind. In terms of safety, both scenarios are equally safe during normal flight at cruising altitude. It is safer to land and takeoff, however, into the wind IS THERE ANY MATERIAL THAT CAN BLOCK A MAGNETIC FORCE Is there any material that can block a magnetic force? Specifically does lead block magnetic fields? Asked by: Dustin Answer Magnetic fields (forces are caused by magnetic fields) cannot be blocked, no. HOW DID THE EARTH COME TO HAVE A MOLTEN IRON CORE? Four and a half billion years ago, Earth (and the other planets in the Solar System) formed when smaller bits of matter in solar orbit came together gravitationally. As a result of those multiple collisions the kinetic energy of motion was converted to heat energy, resulting in a hot, molten mass that would become our Earth. While in this hot NEW SANDIA UV LEDS EMIT SHORT-WAVELENGTH, HIGH-POWER OUTPUT One emits at a wavelength of 290 nanometers (nm) and produces 1.3 milliwatts of output power, and the other emits at a wavelength of 275 nm and produces 0.4 milliwatts of power. "Emission wavelengths of 275 to 290 nm with such high power outputs is a major breakthrough in UV LEDs development," says Bob Biefeld, manager of Sandia’s Chemical SAY YOU HAVE A TWIN, AND YOU GO OFF INTO SPACE, TRAVELING Say you have a twin, and you go off into space, traveling near the speed of light, when you return, will your twin have aged more? Askedby: Rusty Trump
IF IT WAS POSSIBLE TO TRAVEL FASTER THEN THE SPEED OF If it was possible to travel faster than the speed of light, would time reverse itself (like backwards time travel) or just not exist?Asked by: Nicole
WHY IS AN APPLE PIES SAUCE ALWAYS HOTTER THAN THE PASTRY Why is an apple pies sauce always hotter than the pastry even though they have been cooked on the same heat? Asked by: John Howells Answer WHEN A MERCURY THERMOMETER IS IMMERSED IN A HOT LIQUID When a mercury thermometer is immersed in a hot liquid, the mercury level goes down at first and then goes up. Why? Asked by: Bernie Novoa IN NUMEROUS PHOTOS AND FILMS OF NUCLEAR EXPLOSIONS, THERE 'After a certain high level of technical skill is achieved, science and art tend to coalesce in esthetics, plasticity, and form. The greatest scientists are always artists as well.' IS THERE ANY PRACTICAL PROOF FOR TIME DILATION? Is there any practical proof for time dilation? Asked by: Dharmesh Answer There are several direct proofs of time dilation. Extremely accurate clocks have been flown on jet aircraft. WHAT IS MEANT WHEN ONE SAYS THAT THE TEMPERATURE OF THE What is meant when one says that the temperature of the cosmic background radiation is 3K? Asked by: Suraj Answer Any object with internal energy (a temperature above absolute zero, or 0 K) radiates that energy in the form of electromagnetic waves (light). WHAT WILL HOLD A GREATER AMOUNT OF CHARGE, A HOLLOW METAL What will hold a greater amount of charge, a hollow metal sphere or a solid metal sphere? Asked by: Matthew Lammens Answer All else being equal, a hollow and a solid conducting sphere hold the same amount of charge. The amount of charge held by a capacitor is given by WHY IS IT IMPOSSIBLE TO PUMP WATER FROM VERY DEEP IN THE Why is it impossible to pump water from very deep in the ground with a surface pump? Asked by: Curt Fahey Answer The key to understanding this is realizing that suction is not a force, but simply removing an opposing force to the force of air pressure which is already there. HOW TALL DOES A MIRROR HAVE TO BE TO FIT AN ENTIRE PERSONS Ask the experts your physics and astronomy questions, read answerarchive, and more.
IS IT EASIER FOR AN AIRPLANE TO TRAVEL EAST TO WEST OR Is it easier for an airplane to travel East to West or West to East? Asked by: Andy McGlen Answer The ease with which an airplane may travel east or west depends on your definition of 'ease'. WHY IS AN APPLE PIES SAUCE ALWAYS HOTTER THAN THE PASTRY Why is an apple pies sauce always hotter than the pastry even though they have been cooked on the same heat? Asked by: John Howells Answer WHERE IS MERCURY FOUND IN THE WORLD? Where is mercury found in the world? Asked by: William Answer Mercury (atomic symbol Hg) is a liquid at room temperature. Finding large pools of the element is for all purposes impossible, and finding it in its native state is also fairly rare. WILL A LAKE FREEZE FASTER ON A WINDY DAY THAN A CALM DAY? Will a lake freeze faster on a windy day than a calm day? Asked by: Ken Morgan Answer Evaporative cooling could cause the overall temperature of a lake to cool faster on a windy day than on a still one of the same temperature. IN NUMEROUS PHOTOS AND FILMS OF NUCLEAR EXPLOSIONS, THERE 'After a certain high level of technical skill is achieved, science and art tend to coalesce in esthetics, plasticity, and form. The greatest scientists are always artists as well.' IS THERE ANY PRACTICAL PROOF FOR TIME DILATION? Is there any practical proof for time dilation? Asked by: Dharmesh Answer There are several direct proofs of time dilation. Extremely accurate clocks have been flown on jet aircraft. WHAT IS MEANT WHEN ONE SAYS THAT THE TEMPERATURE OF THE What is meant when one says that the temperature of the cosmic background radiation is 3K? Asked by: Suraj Answer Any object with internal energy (a temperature above absolute zero, or 0 K) radiates that energy in the form of electromagnetic waves (light). WHAT WILL HOLD A GREATER AMOUNT OF CHARGE, A HOLLOW METAL What will hold a greater amount of charge, a hollow metal sphere or a solid metal sphere? Asked by: Matthew Lammens Answer All else being equal, a hollow and a solid conducting sphere hold the same amount of charge. The amount of charge held by a capacitor is given by WHY IS IT IMPOSSIBLE TO PUMP WATER FROM VERY DEEP IN THE Why is it impossible to pump water from very deep in the ground with a surface pump? Asked by: Curt Fahey Answer The key to understanding this is realizing that suction is not a force, but simply removing an opposing force to the force of air pressure which is already there. HOW TALL DOES A MIRROR HAVE TO BE TO FIT AN ENTIRE PERSONS Ask the experts your physics and astronomy questions, read answerarchive, and more.
IS IT EASIER FOR AN AIRPLANE TO TRAVEL EAST TO WEST OR Is it easier for an airplane to travel East to West or West to East? Asked by: Andy McGlen Answer The ease with which an airplane may travel east or west depends on your definition of 'ease'. WHY IS AN APPLE PIES SAUCE ALWAYS HOTTER THAN THE PASTRY Why is an apple pies sauce always hotter than the pastry even though they have been cooked on the same heat? Asked by: John Howells Answer WHERE IS MERCURY FOUND IN THE WORLD? Where is mercury found in the world? Asked by: William Answer Mercury (atomic symbol Hg) is a liquid at room temperature. Finding large pools of the element is for all purposes impossible, and finding it in its native state is also fairly rare. WILL A LAKE FREEZE FASTER ON A WINDY DAY THAN A CALM DAY? Will a lake freeze faster on a windy day than a calm day? Asked by: Ken Morgan Answer Evaporative cooling could cause the overall temperature of a lake to cool faster on a windy day than on a still one of the same temperature. HOW MUCH HYDROGEN CAN BE EXTRACTED FROM A GALLON OF WATER How much Hydrogen can be extracted from a gallon of water? Is there any reason why a fuel cell powered aquatic vehicle (boat, submarine) could not supplement the Hydrogen supplies on-board with Hydrogen extracted from sea water, thus extending their range? A FULL CAN AND AN EMPTY CAN ARE ROLLED DOWN A RAMP. WHAT A full can and an empty can are rolled down a ramp. What happens and why? Asked by: Lei Bao Answer The full can will roll faster than the empty can and reach the bottom of the ramp first. IS IT EASIER FOR AN AIRPLANE TO TRAVEL EAST TO WEST OR Is it easier for an airplane to travel East to West or West to East? Asked by: Andy McGlen Answer The ease with which an airplane may travel east or west depends on your definition of 'ease'. HOW IS LIGHT FORMED IN A LIGHT BULB? Ask the experts your physics and astronomy questions, read answerarchive, and more.
IS THERE ANY MATERIAL THAT CAN BLOCK A MAGNETIC FORCE Is there any material that can block a magnetic force? Specifically does lead block magnetic fields? Asked by: Dustin Answer Magnetic fields (forces are caused by magnetic fields) cannot be blocked, no. WHY CAN A PERSON LAY ON A BED OF NAILS AND NOT BE INJURED Why can a person lay on a bed of nails and not be injured? What is this scientific theory called? Asked by: Marcia Answer The 'secret' to this phenomenon is first to understand that it is the force per unit area of skin (i.e., pressure) that determines if a nail will pierce the skin. The force is determined by the weight of the person lying onthe bed of nails.
WHAT IS MEANT BY THE THEORY THAT THE SUN IS A THIRD 'A theory with mathematical beauty is more likely to be correct than an ugly one that fits some experimental data. God is a mathematician of a very high order, and He used very advanced mathematics in constructing the universe.' IF YOU'RE IN A CAR TRAVELING AT THE SPEED OF LIGHT AND YOU If you're in a car traveling at the speed of light and you turn your headlights on, does anything happen? Asked by: Nicole Answer Your question contradicts Einstein's Special Theory of Relativity which states that no object with mass CAN travel at, or above, the speed oflight (c).
WILL A LAKE FREEZE FASTER ON A WINDY DAY THAN A CALM DAY? Will a lake freeze faster on a windy day than a calm day? Asked by: Ken Morgan Answer Evaporative cooling could cause the overall temperature of a lake to cool faster on a windy day than on a still one of the same temperature. WHAT IS THE SIGNIFICANCE OF THE NUMBER 137 IN PHYSICS? What is the significance of the number 137 in physics? Asked by: Undisclosed Sender Answer The importance of the number 137 is that it is related to the so-called 'fine IS THERE ANY PRACTICAL PROOF FOR TIME DILATION? Is there any practical proof for time dilation? Asked by: Dharmesh Answer There are several direct proofs of time dilation. Extremely accurate clocks have been flown on jet aircraft. WHY IS IT IMPOSSIBLE TO PUMP WATER FROM VERY DEEP IN THE Why is it impossible to pump water from very deep in the ground with a surface pump? Asked by: Curt Fahey Answer The key to understanding this is realizing that suction is not a force, but simply removing an opposing force to the force of air pressure which is already there. IS IT EASIER FOR AN AIRPLANE TO TRAVEL EAST TO WEST OR Answer. The ease with which an airplane may travel east or west depends on your definition of 'ease'. In all cases, the key is the direction of the airplane relative to the wind. In terms of safety, both scenarios are equally safe during normal flight at cruising altitude. It is safer to land and takeoff, however, into the wind WHY IS AN APPLE PIES SAUCE ALWAYS HOTTER THAN THE PASTRY Why is an apple pies sauce always hotter than the pastry even though they have been cooked on the same heat? Asked by: John Howells Answer IN NUMEROUS PHOTOS AND FILMS OF NUCLEAR EXPLOSIONS, THERE 'After a certain high level of technical skill is achieved, science and art tend to coalesce in esthetics, plasticity, and form. The greatest scientists are always artists as well.' HOW TALL DOES A MIRROR HAVE TO BE TO FIT AN ENTIRE PERSONS Answer. You can best find this answer with a newspaper and roll of tape on a full length mirror in your home. Cover all the parts of the mirror you DON'T need to see your reflection. You will see that you only need a mirror length of about 1/2 your height. This is due to the principle of reflection, which states that the angle of incidence WHAT IS MEANT WHEN ONE SAYS THAT THE TEMPERATURE OF THE What is meant when one says that the temperature of the cosmic background radiation is 3K? Asked by: Suraj Answer Any object with internal energy (a temperature above absolute zero, or 0 K) radiates that energy in the form of electromagnetic waves (light). WHERE IS MERCURY FOUND IN THE WORLD? Where is mercury found in the world? Asked by: William Answer Mercury (atomic symbol Hg) is a liquid at room temperature. Finding large pools of the element is for all purposes impossible, and finding it in its native state is also fairly rare. IF YOU HOVER ANY DISTANCE ABOVE THE EARTH (IN A HELICOPTER If you hover any distance above the earth (in a helicopter, for example) for a day or so, why aren't you and the helicopter occupants on the other side of the world if the Earth is going through itsnormal revolution?
WHAT WILL HOLD A GREATER AMOUNT OF CHARGE, A HOLLOW METAL Answer. All else being equal, a hollow and a solid conducting sphere hold the same amount of charge . where Q is the amount of charge, C is the 'capacitance' of the capacitor and V is the voltage applied between the conducting plates or surfaces of the capacitor. In the case of an isolated conducting sphere (hollow or solid), one plateconsists
IS THERE ANY PRACTICAL PROOF FOR TIME DILATION? Is there any practical proof for time dilation? Asked by: Dharmesh Answer There are several direct proofs of time dilation. Extremely accurate clocks have been flown on jet aircraft. WHY IS IT IMPOSSIBLE TO PUMP WATER FROM VERY DEEP IN THE Why is it impossible to pump water from very deep in the ground with a surface pump? Asked by: Curt Fahey Answer The key to understanding this is realizing that suction is not a force, but simply removing an opposing force to the force of air pressure which is already there. IS IT EASIER FOR AN AIRPLANE TO TRAVEL EAST TO WEST OR Answer. The ease with which an airplane may travel east or west depends on your definition of 'ease'. In all cases, the key is the direction of the airplane relative to the wind. In terms of safety, both scenarios are equally safe during normal flight at cruising altitude. It is safer to land and takeoff, however, into the wind WHY IS AN APPLE PIES SAUCE ALWAYS HOTTER THAN THE PASTRY Why is an apple pies sauce always hotter than the pastry even though they have been cooked on the same heat? Asked by: John Howells Answer IN NUMEROUS PHOTOS AND FILMS OF NUCLEAR EXPLOSIONS, THERE 'After a certain high level of technical skill is achieved, science and art tend to coalesce in esthetics, plasticity, and form. The greatest scientists are always artists as well.' HOW TALL DOES A MIRROR HAVE TO BE TO FIT AN ENTIRE PERSONS Answer. You can best find this answer with a newspaper and roll of tape on a full length mirror in your home. Cover all the parts of the mirror you DON'T need to see your reflection. You will see that you only need a mirror length of about 1/2 your height. This is due to the principle of reflection, which states that the angle of incidence WHAT IS MEANT WHEN ONE SAYS THAT THE TEMPERATURE OF THE What is meant when one says that the temperature of the cosmic background radiation is 3K? Asked by: Suraj Answer Any object with internal energy (a temperature above absolute zero, or 0 K) radiates that energy in the form of electromagnetic waves (light). WHERE IS MERCURY FOUND IN THE WORLD? Where is mercury found in the world? Asked by: William Answer Mercury (atomic symbol Hg) is a liquid at room temperature. Finding large pools of the element is for all purposes impossible, and finding it in its native state is also fairly rare. IF YOU HOVER ANY DISTANCE ABOVE THE EARTH (IN A HELICOPTER If you hover any distance above the earth (in a helicopter, for example) for a day or so, why aren't you and the helicopter occupants on the other side of the world if the Earth is going through itsnormal revolution?
WHAT WILL HOLD A GREATER AMOUNT OF CHARGE, A HOLLOW METAL Answer. All else being equal, a hollow and a solid conducting sphere hold the same amount of charge . where Q is the amount of charge, C is the 'capacitance' of the capacitor and V is the voltage applied between the conducting plates or surfaces of the capacitor. In the case of an isolated conducting sphere (hollow or solid), one plateconsists
A FULL CAN AND AN EMPTY CAN ARE ROLLED DOWN A RAMP. WHAT For the empty can, 100% of the mass of the can spins as the can rolls, but for the full can, much of the liquid in the can is effectively sliding down the ramp without spinning. Thus 100% of the mass of the sliding liquid goes into translational kinetic energy, and the full can will have a greater speed. Now for in reality there will be some IS IT EASIER FOR AN AIRPLANE TO TRAVEL EAST TO WEST OR Answer. The ease with which an airplane may travel east or west depends on your definition of 'ease'. In all cases, the key is the direction of the airplane relative to the wind. In terms of safety, both scenarios are equally safe during normal flight at cruising altitude. It is safer to land and takeoff, however, into the wind HOW MUCH HYDROGEN CAN BE EXTRACTED FROM A GALLON OF WATER How much Hydrogen can be extracted from a gallon of water? Is there any reason why a fuel cell powered aquatic vehicle (boat, submarine) could not supplement the Hydrogen supplies on-board with Hydrogen extracted from sea water, thus extending their range? WHAT IS MEANT BY THE THEORY THAT THE SUN IS A THIRD Thus later generations of stars would start with a higher proportion of heavier nuclei, and would have different spectra than first generation stars. This coupled with estimates of the age of the universe and the age of our sun is how we believe the sun is a third generation star. Answered by: Rob Landolfi, Science Teacher,Washington, DC.
HOW DOES A FARADAY CAGE WORK? OR, WHY CAN A SATELLITE DISH How does a Faraday Cage work? or, Why can a satellite dish have holes in it? Asked by: Undisclosed Visitor Answer In electromagnetic field theory, when one solves for the distribution of a field in and around a conducting surface, one finds that electromagnetic waves do not penetrate very far through holes that are less than about a wavelengthacross.
IS THERE ANY MATERIAL THAT CAN BLOCK A MAGNETIC FORCE Is there any material that can block a magnetic force? Specifically does lead block magnetic fields? Asked by: Dustin Answer Magnetic fields (forces are caused by magnetic fields) cannot be blocked, no. WHY CAN A PERSON LAY ON A BED OF NAILS AND NOT BE INJURED Why can a person lay on a bed of nails and not be injured? What is this scientific theory called? Asked by: Marcia Answer The 'secret' to this phenomenon is first to understand that it is the force per unit area of skin (i.e., pressure) that determines if a nail will pierce the skin. The force is determined by the weight of the person lying onthe bed of nails.
IF YOU'RE IN A CAR TRAVELING AT THE SPEED OF LIGHT AND YOU If you're in a car traveling at the speed of light and you turn your headlights on, does anything happen? Asked by: Nicole Answer Your question contradicts Einstein's Special Theory of Relativity which states that no object with mass CAN travel at, or above, the speed oflight (c).
WILL A LAKE FREEZE FASTER ON A WINDY DAY THAN A CALM DAY? Answer. Evaporative cooling could cause the overall temperature of a lake to cool faster on a windy day than on a still one of the same temperature. Any liquid has a thin layer of vapor over its surface, including water. This layer of gas is made up of a transient population of molecules with enough kinetic energy to separate fromthe rest of
WHAT IS THE SIGNIFICANCE OF THE NUMBER 137 IN PHYSICS? What is the significance of the number 137 in physics? Asked by: Undisclosed Sender Answer The importance of the number 137 is that it is related to the so-called 'fine WHY IS IT IMPOSSIBLE TO PUMP WATER FROM VERY DEEP IN THE Actually, a total vacuum cannot be created over water. As the pressure is reduced, the boiling point of the water is lowered, producing a layer of water vapor between the water's surface and the pump. The water vapor reduces the ultimate vacuum and the maximum pumping depth, but only by about 0.7 inches (1.8cm) at 20°C. 'The atomic bomb IS THERE ANY MATERIAL THAT CAN BLOCK A MAGNETIC FORCEHISTORY OFPHYSICSNEWS
Is there any material that can block a magnetic force? Specifically does lead block magnetic fields? Asked by: Dustin Answer Magnetic fields (forces are caused by magnetic fields) cannot be blocked, no. WHAT IS MEANT WHEN ONE SAYS THAT THE TEMPERATURE OF THE What is meant when one says that the temperature of the cosmic background radiation is 3K? Asked by: Suraj Answer Any object with internal energy (a temperature above absolute zero, or 0 K) radiates that energy in the form of electromagnetic waves (light). IS THERE A SANTA CLAUS? Is there a Santa Claus? - a physicist view. 1) No known species of reindeer can fly. But there are 300,000 species of living organisms yet to be classified, and while most of these are insects and germs, this does not COMPLETELY rule out flying reindeer which only Santa has ever seen. 2) There are 2 billion children (persons under 18) in theworld.
WHAT WILL HOLD A GREATER AMOUNT OF CHARGE, A HOLLOW METAL Answer. All else being equal, a hollow and a solid conducting sphere hold the same amount of charge . where Q is the amount of charge, C is the 'capacitance' of the capacitor and V is the voltage applied between the conducting plates or surfaces of the capacitor. In the case of an isolated conducting sphere (hollow or solid), one plateconsists
IN NUMEROUS PHOTOS AND FILMS OF NUCLEAR EXPLOSIONS, THERE 'After a certain high level of technical skill is achieved, science and art tend to coalesce in esthetics, plasticity, and form. The greatest scientists are always artists as well.' HOW TALL DOES A MIRROR HAVE TO BE TO FIT AN ENTIRE PERSONS Answer. You can best find this answer with a newspaper and roll of tape on a full length mirror in your home. Cover all the parts of the mirror you DON'T need to see your reflection. You will see that you only need a mirror length of about 1/2 your height. This is due to the principle of reflection, which states that the angle of incidence IS THERE ANY PRACTICAL PROOF FOR TIME DILATION? Is there any practical proof for time dilation? Asked by: Dharmesh Answer There are several direct proofs of time dilation. Extremely accurate clocks have been flown on jet aircraft. WHAT IS MEANT BY THE THEORY THAT THE SUN IS A THIRD Thus later generations of stars would start with a higher proportion of heavier nuclei, and would have different spectra than first generation stars. This coupled with estimates of the age of the universe and the age of our sun is how we believe the sun is a third generation star. Answered by: Rob Landolfi, Science Teacher,Washington, DC.
WHERE IS MERCURY FOUND IN THE WORLD? Where is mercury found in the world? Asked by: William Answer Mercury (atomic symbol Hg) is a liquid at room temperature. Finding large pools of the element is for all purposes impossible, and finding it in its native state is also fairly rare. WHY IS IT IMPOSSIBLE TO PUMP WATER FROM VERY DEEP IN THE Actually, a total vacuum cannot be created over water. As the pressure is reduced, the boiling point of the water is lowered, producing a layer of water vapor between the water's surface and the pump. The water vapor reduces the ultimate vacuum and the maximum pumping depth, but only by about 0.7 inches (1.8cm) at 20°C. 'The atomic bomb IS THERE ANY MATERIAL THAT CAN BLOCK A MAGNETIC FORCEHISTORY OFPHYSICSNEWS
Is there any material that can block a magnetic force? Specifically does lead block magnetic fields? Asked by: Dustin Answer Magnetic fields (forces are caused by magnetic fields) cannot be blocked, no. WHAT IS MEANT WHEN ONE SAYS THAT THE TEMPERATURE OF THE What is meant when one says that the temperature of the cosmic background radiation is 3K? Asked by: Suraj Answer Any object with internal energy (a temperature above absolute zero, or 0 K) radiates that energy in the form of electromagnetic waves (light). IS THERE A SANTA CLAUS? Is there a Santa Claus? - a physicist view. 1) No known species of reindeer can fly. But there are 300,000 species of living organisms yet to be classified, and while most of these are insects and germs, this does not COMPLETELY rule out flying reindeer which only Santa has ever seen. 2) There are 2 billion children (persons under 18) in theworld.
WHAT WILL HOLD A GREATER AMOUNT OF CHARGE, A HOLLOW METAL Answer. All else being equal, a hollow and a solid conducting sphere hold the same amount of charge . where Q is the amount of charge, C is the 'capacitance' of the capacitor and V is the voltage applied between the conducting plates or surfaces of the capacitor. In the case of an isolated conducting sphere (hollow or solid), one plateconsists
IN NUMEROUS PHOTOS AND FILMS OF NUCLEAR EXPLOSIONS, THERE 'After a certain high level of technical skill is achieved, science and art tend to coalesce in esthetics, plasticity, and form. The greatest scientists are always artists as well.' HOW TALL DOES A MIRROR HAVE TO BE TO FIT AN ENTIRE PERSONS Answer. You can best find this answer with a newspaper and roll of tape on a full length mirror in your home. Cover all the parts of the mirror you DON'T need to see your reflection. You will see that you only need a mirror length of about 1/2 your height. This is due to the principle of reflection, which states that the angle of incidence IS THERE ANY PRACTICAL PROOF FOR TIME DILATION? Is there any practical proof for time dilation? Asked by: Dharmesh Answer There are several direct proofs of time dilation. Extremely accurate clocks have been flown on jet aircraft. WHAT IS MEANT BY THE THEORY THAT THE SUN IS A THIRD Thus later generations of stars would start with a higher proportion of heavier nuclei, and would have different spectra than first generation stars. This coupled with estimates of the age of the universe and the age of our sun is how we believe the sun is a third generation star. Answered by: Rob Landolfi, Science Teacher,Washington, DC.
WHERE IS MERCURY FOUND IN THE WORLD? Where is mercury found in the world? Asked by: William Answer Mercury (atomic symbol Hg) is a liquid at room temperature. Finding large pools of the element is for all purposes impossible, and finding it in its native state is also fairly rare. ON BEING THE RIGHT SIZE On Being the Right Size. by J. B. S. Haldane. The most obvious differences between different animals are differences of size, but for some reason the zoologists have paid singularly little attention to them. In a large textbook of zoology before me I find no indication that the eagle is larger than the sparrow, or the hippopotamus biggerthan
WHAT IS MEANT BY THE THEORY THAT THE SUN IS A THIRD Thus later generations of stars would start with a higher proportion of heavier nuclei, and would have different spectra than first generation stars. This coupled with estimates of the age of the universe and the age of our sun is how we believe the sun is a third generation star. Answered by: Rob Landolfi, Science Teacher,Washington, DC.
HOW IS MACH RELATED TO TEMPERATURE OF THE AIR? HOW DOES A Ask the experts your physics and astronomy questions, read answerarchive, and more.
HOW IS CARBON DATING DONE? Voila, now you can tell how old a sample of organic matter is. 1) Obviously, this technique only works for dead organic material. 2) This technique is best for dating items which died between on the order of 1000 to on the order of 1,000,000 years ago. Carbon 14 dating is not great for dating things like a year old because if much lessthan 1
WHAT IS REST MASS? HOW TO EXPLAIN IT ESPECIALLY TO THE So, quite simply, the 'rest mass' of an object is the inertial mass that an object has when it is at rest. Answered by: Warren Davis, Ph.D., President, Davis Associates, Inc., Newton, MA USA. Mass measures the amount of inertia an object has, with inertia defined as the resistance the object offers to a change in its state of motion. WHERE IS MERCURY FOUND IN THE WORLD? Where is mercury found in the world? Asked by: William Answer Mercury (atomic symbol Hg) is a liquid at room temperature. Finding large pools of the element is for all purposes impossible, and finding it in its native state is also fairly rare. HOW MUCH HYDROGEN CAN BE EXTRACTED FROM A GALLON OF WATER How much Hydrogen can be extracted from a gallon of water? Is there any reason why a fuel cell powered aquatic vehicle (boat, submarine) could not supplement the Hydrogen supplies on-board with Hydrogen extracted from sea water, thus extending their range? IF YOU'RE IN A CAR TRAVELING AT THE SPEED OF LIGHT AND YOU If you're in a car traveling at the speed of light and you turn your headlights on, does anything happen? Asked by: Nicole Answer Your question contradicts Einstein's Special Theory of Relativity which states that no object with mass CAN travel at, or above, the speed oflight (c).
HOW CAN A POTATO BE USED TO LIGHT A LIGHTBULB? Answer. Yes, a potato (e) can be used to power a lamp. Usually a penny & a galvanized nail are used for this 'battery'. Copper & zinc are REQUIRED for this process, but not a penny & a nail per se. A potato works well, but a tomato, lemon or other citrus fruit can be substituted. The zinc and the copper are the anode and cathodeterminals of
SAY YOU HAVE A TWIN, AND YOU GO OFF INTO SPACE, TRAVELING 'You cannot hope to build a better world without improving the individuals. To that end each of us must work for his own improvement, and at the same time share a general responsibility for all humanity, our particular duty being to aid those to whom we think we can be mostuseful.'
WHY IS IT IMPOSSIBLE TO PUMP WATER FROM VERY DEEP IN THE Actually, a total vacuum cannot be created over water. As the pressure is reduced, the boiling point of the water is lowered, producing a layer of water vapor between the water's surface and the pump. The water vapor reduces the ultimate vacuum and the maximum pumping depth, but only by about 0.7 inches (1.8cm) at 20°C. 'The atomic bomb IS THERE ANY MATERIAL THAT CAN BLOCK A MAGNETIC FORCEHISTORY OFPHYSICSNEWS
Is there any material that can block a magnetic force? Specifically does lead block magnetic fields? Asked by: Dustin Answer Magnetic fields (forces are caused by magnetic fields) cannot be blocked, no. WHAT IS MEANT WHEN ONE SAYS THAT THE TEMPERATURE OF THEBODY TEMP OF 949
What is meant when one says that the temperature of the cosmic background radiation is 3K? Asked by: Suraj Answer Any object with internal energy (a temperature above absolute zero, or 0 K) radiates that energy in the form of electromagnetic waves (light). IS THERE A SANTA CLAUS? Is there a Santa Claus? - a physicist view. 1) No known species of reindeer can fly. But there are 300,000 species of living organisms yet to be classified, and while most of these are insects and germs, this does not COMPLETELY rule out flying reindeer which only Santa has ever seen. 2) There are 2 billion children (persons under 18) in theworld.
WHAT WILL HOLD A GREATER AMOUNT OF CHARGE, A HOLLOW METALHOLLOW ALUMINUM SPHERESHOLLOW SPHERE VOLUMEPLASTIC HOLLOW SPHERESSOLID SPHERE VS HOLLOW SPHEREVOLUME OF SOLID SPHERE Answer. All else being equal, a hollow and a solid conducting sphere hold the same amount of charge . where Q is the amount of charge, C is the 'capacitance' of the capacitor and V is the voltage applied between the conducting plates or surfaces of the capacitor. In the case of an isolated conducting sphere (hollow or solid), one plateconsists
IN NUMEROUS PHOTOS AND FILMS OF NUCLEAR EXPLOSIONS, THERE 'After a certain high level of technical skill is achieved, science and art tend to coalesce in esthetics, plasticity, and form. The greatest scientists are always artists as well.' HOW TALL DOES A MIRROR HAVE TO BE TO FIT AN ENTIRE PERSONS Answer. You can best find this answer with a newspaper and roll of tape on a full length mirror in your home. Cover all the parts of the mirror you DON'T need to see your reflection. You will see that you only need a mirror length of about 1/2 your height. This is due to the principle of reflection, which states that the angle of incidence IS THERE ANY PRACTICAL PROOF FOR TIME DILATION? Is there any practical proof for time dilation? Asked by: Dharmesh Answer There are several direct proofs of time dilation. Extremely accurate clocks have been flown on jet aircraft. WHAT IS MEANT BY THE THEORY THAT THE SUN IS A THIRD Thus later generations of stars would start with a higher proportion of heavier nuclei, and would have different spectra than first generation stars. This coupled with estimates of the age of the universe and the age of our sun is how we believe the sun is a third generation star. Answered by: Rob Landolfi, Science Teacher,Washington, DC.
WHERE IS MERCURY FOUND IN THE WORLD? Where is mercury found in the world? Asked by: William Answer Mercury (atomic symbol Hg) is a liquid at room temperature. Finding large pools of the element is for all purposes impossible, and finding it in its native state is also fairly rare. WHY IS IT IMPOSSIBLE TO PUMP WATER FROM VERY DEEP IN THE Actually, a total vacuum cannot be created over water. As the pressure is reduced, the boiling point of the water is lowered, producing a layer of water vapor between the water's surface and the pump. The water vapor reduces the ultimate vacuum and the maximum pumping depth, but only by about 0.7 inches (1.8cm) at 20°C. 'The atomic bomb IS THERE ANY MATERIAL THAT CAN BLOCK A MAGNETIC FORCEHISTORY OFPHYSICSNEWS
Is there any material that can block a magnetic force? Specifically does lead block magnetic fields? Asked by: Dustin Answer Magnetic fields (forces are caused by magnetic fields) cannot be blocked, no. WHAT IS MEANT WHEN ONE SAYS THAT THE TEMPERATURE OF THEBODY TEMP OF 949
What is meant when one says that the temperature of the cosmic background radiation is 3K? Asked by: Suraj Answer Any object with internal energy (a temperature above absolute zero, or 0 K) radiates that energy in the form of electromagnetic waves (light). IS THERE A SANTA CLAUS? Is there a Santa Claus? - a physicist view. 1) No known species of reindeer can fly. But there are 300,000 species of living organisms yet to be classified, and while most of these are insects and germs, this does not COMPLETELY rule out flying reindeer which only Santa has ever seen. 2) There are 2 billion children (persons under 18) in theworld.
WHAT WILL HOLD A GREATER AMOUNT OF CHARGE, A HOLLOW METALHOLLOW ALUMINUM SPHERESHOLLOW SPHERE VOLUMEPLASTIC HOLLOW SPHERESSOLID SPHERE VS HOLLOW SPHEREVOLUME OF SOLID SPHERE Answer. All else being equal, a hollow and a solid conducting sphere hold the same amount of charge . where Q is the amount of charge, C is the 'capacitance' of the capacitor and V is the voltage applied between the conducting plates or surfaces of the capacitor. In the case of an isolated conducting sphere (hollow or solid), one plateconsists
IN NUMEROUS PHOTOS AND FILMS OF NUCLEAR EXPLOSIONS, THERE 'After a certain high level of technical skill is achieved, science and art tend to coalesce in esthetics, plasticity, and form. The greatest scientists are always artists as well.' HOW TALL DOES A MIRROR HAVE TO BE TO FIT AN ENTIRE PERSONS Answer. You can best find this answer with a newspaper and roll of tape on a full length mirror in your home. Cover all the parts of the mirror you DON'T need to see your reflection. You will see that you only need a mirror length of about 1/2 your height. This is due to the principle of reflection, which states that the angle of incidence IS THERE ANY PRACTICAL PROOF FOR TIME DILATION? Is there any practical proof for time dilation? Asked by: Dharmesh Answer There are several direct proofs of time dilation. Extremely accurate clocks have been flown on jet aircraft. WHAT IS MEANT BY THE THEORY THAT THE SUN IS A THIRD Thus later generations of stars would start with a higher proportion of heavier nuclei, and would have different spectra than first generation stars. This coupled with estimates of the age of the universe and the age of our sun is how we believe the sun is a third generation star. Answered by: Rob Landolfi, Science Teacher,Washington, DC.
WHERE IS MERCURY FOUND IN THE WORLD? Where is mercury found in the world? Asked by: William Answer Mercury (atomic symbol Hg) is a liquid at room temperature. Finding large pools of the element is for all purposes impossible, and finding it in its native state is also fairly rare. ON BEING THE RIGHT SIZE On Being the Right Size. by J. B. S. Haldane. The most obvious differences between different animals are differences of size, but for some reason the zoologists have paid singularly little attention to them. In a large textbook of zoology before me I find no indication that the eagle is larger than the sparrow, or the hippopotamus biggerthan
WHAT IS MEANT BY THE THEORY THAT THE SUN IS A THIRD Thus later generations of stars would start with a higher proportion of heavier nuclei, and would have different spectra than first generation stars. This coupled with estimates of the age of the universe and the age of our sun is how we believe the sun is a third generation star. Answered by: Rob Landolfi, Science Teacher,Washington, DC.
HOW IS MACH RELATED TO TEMPERATURE OF THE AIR? HOW DOES A Ask the experts your physics and astronomy questions, read answerarchive, and more.
HOW IS CARBON DATING DONE? Voila, now you can tell how old a sample of organic matter is. 1) Obviously, this technique only works for dead organic material. 2) This technique is best for dating items which died between on the order of 1000 to on the order of 1,000,000 years ago. Carbon 14 dating is not great for dating things like a year old because if much lessthan 1
WHAT IS REST MASS? HOW TO EXPLAIN IT ESPECIALLY TO THE So, quite simply, the 'rest mass' of an object is the inertial mass that an object has when it is at rest. Answered by: Warren Davis, Ph.D., President, Davis Associates, Inc., Newton, MA USA. Mass measures the amount of inertia an object has, with inertia defined as the resistance the object offers to a change in its state of motion. WHERE IS MERCURY FOUND IN THE WORLD? Where is mercury found in the world? Asked by: William Answer Mercury (atomic symbol Hg) is a liquid at room temperature. Finding large pools of the element is for all purposes impossible, and finding it in its native state is also fairly rare. HOW MUCH HYDROGEN CAN BE EXTRACTED FROM A GALLON OF WATER How much Hydrogen can be extracted from a gallon of water? Is there any reason why a fuel cell powered aquatic vehicle (boat, submarine) could not supplement the Hydrogen supplies on-board with Hydrogen extracted from sea water, thus extending their range? IF YOU'RE IN A CAR TRAVELING AT THE SPEED OF LIGHT AND YOU If you're in a car traveling at the speed of light and you turn your headlights on, does anything happen? Asked by: Nicole Answer Your question contradicts Einstein's Special Theory of Relativity which states that no object with mass CAN travel at, or above, the speed oflight (c).
HOW CAN A POTATO BE USED TO LIGHT A LIGHTBULB? Answer. Yes, a potato (e) can be used to power a lamp. Usually a penny & a galvanized nail are used for this 'battery'. Copper & zinc are REQUIRED for this process, but not a penny & a nail per se. A potato works well, but a tomato, lemon or other citrus fruit can be substituted. The zinc and the copper are the anode and cathodeterminals of
SAY YOU HAVE A TWIN, AND YOU GO OFF INTO SPACE, TRAVELING 'You cannot hope to build a better world without improving the individuals. To that end each of us must work for his own improvement, and at the same time share a general responsibility for all humanity, our particular duty being to aid those to whom we think we can be mostuseful.'
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SCIENTISTS MODEL SATURN’S INTERIOR * Simulations offer an intriguing look into Saturn’s interior, suggesting that a thick layer of helium rain influences the planet’smagnetic field.
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NEW ALGORITHM USES A HOLOGRAM TO CONTROL TRAPPED IONS * Researchers have discovered the most precise way to control individual ions using holographic optical engineering technology. Simons F NEW APPLICATION OF ARTIFICIAL INTELLIGENCE JUST REMOVED ONE OF THE BIGGEST ROADBLOCKS IN ASTROPHYSICS * Using neural networks, Flatiron Institute research fellow Yin Li and his colleagues simulated vast, complex universes in a fraction of the time it takes with conventional methods. __ __ UChicago ICY CLOUDS COULD HAVE KEPT EARLY MARS WARM ENOUGH FOR RIVERS AND LAKES, STUDY FINDS * Simulation led by UChicago geoscientist finds missing piece to Martian climate puzzle JPL NASA ASTRONOMERS RELEASE NEW ALL-SKY MAP OF MILKY WAY'S OUTER REACHES * The highlight of the new chart is a wake of stars, stirred up by a small galaxy set to collide with the Milky Way. The map could also offer a new test of dark matter theories. PHYSICS AND ASTRONOMY ONLINE Welcome to PhysLink.com - the physics and astronomy online portal! We feature latest physics news and editorials, extensive science reference and constants section, education section where you can ask our experts any physics or astronomy related question. Also, don't miss our fun page and our online science store.
SCIENCEIQ FACTS
WHAT IS AN ATOM?
* by EPA US Environmental Protection Agency and ScienceIQ.com Atoms are the extremely small particles of which we, and everything around us, are made. A single element, such as oxygen, is made up of similar atoms. Different elements, such as oxygen, carbon, and uranium contain different kinds of atoms. There are 92 naturally occurring elements and scientists have made another 17, bringing the total to 109. Atoms are the smallest unit of an element that chemically behaves the same way the element does. When two chemicals react with each other, the reaction takes place between individual atoms--at the atomic level. The processes that cause materials be radioactive--to emit particles and energy--also occur atthe atomic level.
In the early 20th century, an English scientist, Ernest Rutherford, and a Danish scientist, Niels Bohr, developed a way of thinking about the structure of an atom that described an atom as looking very much like our solar system. At the center of every atom was a nucleus, which is comparable to the sun in our solar system. Electrons moved around the nucleus in 'orbits' similar to the way planets move around the sun. (While scientists now know that atomic structure is more complex, the Rutherford-Bohr model is still a useful approximation to begin understanding about atomic structure.) Opposite electrical charges of the protons and electrons do the work of holding the nucleus and its electrons together. Electrons closer to the nucleus are bound more tightly than the outer electrons because of their distance from the protons in the nucleus. The electrons in the outer orbits, or shells, are more loosely bound and affect an atom's chemical properties. A delicate balance of forces among nuclear particles keeps the nucleus stable. Any change in the number, the arrangement, or energy of the nucleons can upset this balance and cause the nucleus to become unstable or radioactive. (Disruption of electrons in the inner orbits can also cause an atom to emit radiation.) The amount of energy required to break up the nucleus into its parts is called the binding energy; it is often referred to as 'cosmic glue'. This is the same amount of energy given off when thenucleus formed.
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PHYSICS & ASTRONOMY FACTSTHE ANTENNAE
NASA's Chandra X-ray Observatory has discovered rich deposits of neon, magnesium, and silicon in a pair of colliding galaxies known as The Antennae. The deposits are located in vast clouds of hot gas. ... THE SUN, THE MIGHTY ENGINE OF OUR SOLAR SYSTEM Our Sun has inspired mythology in almost all cultures, including ancient Egyptians, Aztecs, Native Americans, and Chinese. We now know that the Sun is a huge, bright sphere of mostly ionized gas, abou ... LOOK, UP IN THE SKY. IT'S A BIRD. NO IT'S A METEORITE! Most folks probably think of swallows and the ringing of the Mission bells when the words San Juan Capistrano are heard or seen. This is a popular tradition that celebrates the return of cliff swallow ...__
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'If I have
seen a little further it is by standing on the shoulders of Giants.'ISAAC NEWTON
(_1643-1727_)
SCIENCE SIDEBAR
BEYOND THE BUBBLING VOLCANO: SECRETS TO SUCCESSFUL SCIENCE FAIRPROJECTS
We have put together a list of tips to help you and your child find and develop a successful science fair project. In addition, we've added age appropriate guidelines when needed. 10 WAYS TO KEEP YOUR KIDS INTERESTED IN SCIENCE Young children are natural scientists: they ask questions, pick up sticks and bugs outside, and are curious about the world around them. But as they get a bit older, many kids gradually lose their interest in science. Here are tips to get them excited about science again! COOL SUMMER SCIENCE PROJECTS Summer is a natural time for learning about science. Longer days and the freedom from school schedules allow kids the opportunity to explore the world around them in new and exciting ways. Here are a few ideas to help get you started.PHYSICS CARTOONS
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