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farming.
FOOD SCIENCE: HOW IS FAKE MEAT MADE? What makes it seemingly ‘impossible’ is that its looks, feels and tastes like ground beef – but is entirely made from plants. Engineered by Silicon Valley-based Impossible Foods, this fake meat makes clever use of vegetable fats and proteins so that it even bleeds and sizzles when you cook it. And it’s becoming big business. HOW ARE DEEP-SEA CABLES LAID? Carrying pulses of light fired by powerful lasers, which can then be decoded as data, these cutting-edge cables send information at incredible speed. Today companies like Google, Facebook and Amazon are spending billions of dollars on infrastructure to boost their bandwidth, by laying their own fibre optic cables across the world’soceans.
HOW WATER TURBINES WORK Turbines are usually fixed in place, so when a fluid flows through it there is a drop in pressure at the back edge of each blade that causes the turbine to turn. The principle is the same for air or water and the faster the medium is moving, the greater the PANNING FOR GOLD IN THE 1800S Also watch out for fellow prospectors stealing your territory! 3. Start to pan. Panning is the simplest way to find gold. Swirl a mixture of water and dirt, and the heavier nuggets will sink to the bottom of the pan. The gold will rush downstream, so make sure you catch it before your rivals do! 4. Tools of the trade. HOW CAN WE AGE METAL ITEMS? The date of the discovery of metal-working is going to vary in different parts of the world, but in Britain it will be towards the end of the third millennium BCE – roughly 2300-2000 BCE. The method of working the metal is also a crucial factor for ageing. Casting of iron only became possible during the Industrial Revolution innorth-west
HOW IS MONEY MADE?
8. Cutting to size. In order to separate the individual notes, stacks of sheets are put through a guillotine. 9. Final checks. Notes are then stacked, checked, tested and counted again. 10. Off to the banks. Finally, notes are packaged in bundles and stored in secure cages ready for transport. SAHARAN DUST AND ITS JOURNEY AROUND THE WORLD Saharan dust and its journey around the world. S aharan dust is a mixture of dust and sand from the Sahara Desert. When very strong winds pass over the desert, this mixture blows up into the sky to form clouds, which can reach astonishingly high altitudes. Winds in the upper part of the atmosphere then transport these dust clouds, alsoknown as
AMPHIBIOUS ASSAULT VEHICLE UP CLOSE Amphibious Assault Vehicle up close. Owned by the US Marine Corps, the Amphibious Assault Vehicle (AAV) is a ship-to-shore troop transporter and fully armed combat vehicle. The AAV weighs close to 30 tons and can carry 21 combat-ready Marines and a crew of three. The amphibious tanks launch from the sea-level well decks of assault ships and THE CHEMISTRY BEHIND ICE CREAM In ice cream, tiny droplets of fat are dispersed through the water. The fat comes from the cream, mostly in the form of triglycerides. During ice cream production they are aerosolised and broken down into tiny droplets. Milk proteins, which are also added during the production process, coat the fat droplets and prevent them frominteracting
THE IMPACT OF CATTLE FARMING The environmental consequences of cattle farming range from the detrimental effects on the ozone layer that a billion cows passing digestive gases has to the change in landscape and removal of trees in the creation of farm-friendly areas. Cattle farming generates income for millions of farmers, though many aim to achieve more sustainablefarming.
FOOD SCIENCE: HOW IS FAKE MEAT MADE? What makes it seemingly ‘impossible’ is that its looks, feels and tastes like ground beef – but is entirely made from plants. Engineered by Silicon Valley-based Impossible Foods, this fake meat makes clever use of vegetable fats and proteins so that it even bleeds and sizzles when you cook it. And it’s becoming big business. HOW ARE DEEP-SEA CABLES LAID? Carrying pulses of light fired by powerful lasers, which can then be decoded as data, these cutting-edge cables send information at incredible speed. Today companies like Google, Facebook and Amazon are spending billions of dollars on infrastructure to boost their bandwidth, by laying their own fibre optic cables across the world’soceans.
HOW WATER TURBINES WORK Turbines are usually fixed in place, so when a fluid flows through it there is a drop in pressure at the back edge of each blade that causes the turbine to turn. The principle is the same for air or water and the faster the medium is moving, the greater the PANNING FOR GOLD IN THE 1800S Also watch out for fellow prospectors stealing your territory! 3. Start to pan. Panning is the simplest way to find gold. Swirl a mixture of water and dirt, and the heavier nuggets will sink to the bottom of the pan. The gold will rush downstream, so make sure you catch it before your rivals do! 4. Tools of the trade. HOW CAN WE AGE METAL ITEMS? The date of the discovery of metal-working is going to vary in different parts of the world, but in Britain it will be towards the end of the third millennium BCE – roughly 2300-2000 BCE. The method of working the metal is also a crucial factor for ageing. Casting of iron only became possible during the Industrial Revolution innorth-west
HOW IS MONEY MADE?
8. Cutting to size. In order to separate the individual notes, stacks of sheets are put through a guillotine. 9. Final checks. Notes are then stacked, checked, tested and counted again. 10. Off to the banks. Finally, notes are packaged in bundles and stored in secure cages ready for transport. SAHARAN DUST AND ITS JOURNEY AROUND THE WORLD Saharan dust and its journey around the world. S aharan dust is a mixture of dust and sand from the Sahara Desert. When very strong winds pass over the desert, this mixture blows up into the sky to form clouds, which can reach astonishingly high altitudes. Winds in the upper part of the atmosphere then transport these dust clouds, alsoknown as
AMPHIBIOUS ASSAULT VEHICLE UP CLOSE Amphibious Assault Vehicle up close. Owned by the US Marine Corps, the Amphibious Assault Vehicle (AAV) is a ship-to-shore troop transporter and fully armed combat vehicle. The AAV weighs close to 30 tons and can carry 21 combat-ready Marines and a crew of three. The amphibious tanks launch from the sea-level well decks of assault ships and THE CHEMISTRY BEHIND ICE CREAM In ice cream, tiny droplets of fat are dispersed through the water. The fat comes from the cream, mostly in the form of triglycerides. During ice cream production they are aerosolised and broken down into tiny droplets. Milk proteins, which are also added during the production process, coat the fat droplets and prevent them frominteracting
HOW IT WORKS
Meet the world’s most advanced combat vessel in this issue of How It Works magazine and see how it’s built, as we explore the Scottish dry dock where the Royal Navy is assembling its HOW DID THE SLAVE TRADE END? Having been split from their families, people were forced aboard cramped and disease-ridden ships for months. Life at sea involved brutal physical and emotional abuse, with around 15 per cent dying on the journey. Some feared losing their lives on board, while others feared the lives they were sailing towards, and were force fed by crewas they
HOW IS MONEY MADE?
8. Cutting to size. In order to separate the individual notes, stacks of sheets are put through a guillotine. 9. Final checks. Notes are then stacked, checked, tested and counted again. 10. Off to the banks. Finally, notes are packaged in bundles and stored in secure cages ready for transport. HAVE WE DISCOVERED ALL THE LAND ON EARTH? The entire landscape is buried under ice that can reach depths of up to five kilometres. Rocky ground that is yet to be mapped lies hidden far beneath the frost, including the world’s sixth-largest lake by volume. Scientists studying our changing climate are drilling down toHOW IT WORKS
Airbags are an important car safety feature, and the National Highway Traffic Safety Administration (NHTSA) estimates that they have saved over 42,856 lives since first being introduced more than 35 years ago.HOW IT WORKS
Find out how a plastic bottle, water and a little bleach can make a cheap and long-lasting light bulb A HISTORY OF DOPING IN SPORT The tide of doping would lead to one cyclist saying that all he had to do was “follow the trail of empty syringes and dope wrappers” to stay with the pack during a race. Natural prowess had been shunned for artificial gains. The anti-doping agencies had to fight back; they needed new tests, and quickly. Luckily the tests arrived. HOW CAN WE AGE METAL ITEMS? The date of the discovery of metal-working is going to vary in different parts of the world, but in Britain it will be towards the end of the third millennium BCE – roughly 2300-2000 BCE. The method of working the metal is also a crucial factor for ageing. Casting of iron only became possible during the Industrial Revolution innorth-west
HOW IT WORKS
With Typhoon Haiyan tipped to be the biggest storm ever to hit land, find out more about this deadly weather nowHOW IT WORKS
There are two main routes used by climbers to reach the summit of Everest, the North Ridge Route – which begins in Tibet and is a technically harder climb – and the South Ridge Route, THE IMPACT OF CATTLE FARMING The environmental consequences of cattle farming range from the detrimental effects on the ozone layer that a billion cows passing digestive gases has to the change in landscape and removal of trees in the creation of farm-friendly areas. Cattle farming generates income for millions of farmers, though many aim to achieve more sustainablefarming.
HOW IS MONEY MADE?
8. Cutting to size. In order to separate the individual notes, stacks of sheets are put through a guillotine. 9. Final checks. Notes are then stacked, checked, tested and counted again. 10. Off to the banks. Finally, notes are packaged in bundles and stored in secure cages ready for transport. HOW ARE DEEP-SEA CABLES LAID? Carrying pulses of light fired by powerful lasers, which can then be decoded as data, these cutting-edge cables send information at incredible speed. Today companies like Google, Facebook and Amazon are spending billions of dollars on infrastructure to boost their bandwidth, by laying their own fibre optic cables across the world’soceans.
FOOD SCIENCE: HOW IS FAKE MEAT MADE? What makes it seemingly ‘impossible’ is that its looks, feels and tastes like ground beef – but is entirely made from plants. Engineered by Silicon Valley-based Impossible Foods, this fake meat makes clever use of vegetable fats and proteins so that it even bleeds and sizzles when you cook it. And it’s becoming big business. HOW WATER TURBINES WORK Turbines are usually fixed in place, so when a fluid flows through it there is a drop in pressure at the back edge of each blade that causes the turbine to turn. The principle is the same for air or water and the faster the medium is moving, the greater the PANNING FOR GOLD IN THE 1800S Also watch out for fellow prospectors stealing your territory! 3. Start to pan. Panning is the simplest way to find gold. Swirl a mixture of water and dirt, and the heavier nuggets will sink to the bottom of the pan. The gold will rush downstream, so make sure you catch it before your rivals do! 4. Tools of the trade. HOW CAN WE AGE METAL ITEMS? The date of the discovery of metal-working is going to vary in different parts of the world, but in Britain it will be towards the end of the third millennium BCE – roughly 2300-2000 BCE. The method of working the metal is also a crucial factor for ageing. Casting of iron only became possible during the Industrial Revolution innorth-west
THE CHEMISTRY BEHIND ICE CREAM In ice cream, tiny droplets of fat are dispersed through the water. The fat comes from the cream, mostly in the form of triglycerides. During ice cream production they are aerosolised and broken down into tiny droplets. Milk proteins, which are also added during the production process, coat the fat droplets and prevent them frominteracting
SAHARAN DUST AND ITS JOURNEY AROUND THE WORLD Saharan dust and its journey around the world. S aharan dust is a mixture of dust and sand from the Sahara Desert. When very strong winds pass over the desert, this mixture blows up into the sky to form clouds, which can reach astonishingly high altitudes. Winds in the upper part of the atmosphere then transport these dust clouds, alsoknown as
AMPHIBIOUS ASSAULT VEHICLE UP CLOSE Amphibious Assault Vehicle up close. Owned by the US Marine Corps, the Amphibious Assault Vehicle (AAV) is a ship-to-shore troop transporter and fully armed combat vehicle. The AAV weighs close to 30 tons and can carry 21 combat-ready Marines and a crew of three. The amphibious tanks launch from the sea-level well decks of assault ships and THE IMPACT OF CATTLE FARMING The environmental consequences of cattle farming range from the detrimental effects on the ozone layer that a billion cows passing digestive gases has to the change in landscape and removal of trees in the creation of farm-friendly areas. Cattle farming generates income for millions of farmers, though many aim to achieve more sustainablefarming.
HOW IS MONEY MADE?
8. Cutting to size. In order to separate the individual notes, stacks of sheets are put through a guillotine. 9. Final checks. Notes are then stacked, checked, tested and counted again. 10. Off to the banks. Finally, notes are packaged in bundles and stored in secure cages ready for transport. HOW ARE DEEP-SEA CABLES LAID? Carrying pulses of light fired by powerful lasers, which can then be decoded as data, these cutting-edge cables send information at incredible speed. Today companies like Google, Facebook and Amazon are spending billions of dollars on infrastructure to boost their bandwidth, by laying their own fibre optic cables across the world’soceans.
FOOD SCIENCE: HOW IS FAKE MEAT MADE? What makes it seemingly ‘impossible’ is that its looks, feels and tastes like ground beef – but is entirely made from plants. Engineered by Silicon Valley-based Impossible Foods, this fake meat makes clever use of vegetable fats and proteins so that it even bleeds and sizzles when you cook it. And it’s becoming big business. HOW WATER TURBINES WORK Turbines are usually fixed in place, so when a fluid flows through it there is a drop in pressure at the back edge of each blade that causes the turbine to turn. The principle is the same for air or water and the faster the medium is moving, the greater the PANNING FOR GOLD IN THE 1800S Also watch out for fellow prospectors stealing your territory! 3. Start to pan. Panning is the simplest way to find gold. Swirl a mixture of water and dirt, and the heavier nuggets will sink to the bottom of the pan. The gold will rush downstream, so make sure you catch it before your rivals do! 4. Tools of the trade. HOW CAN WE AGE METAL ITEMS? The date of the discovery of metal-working is going to vary in different parts of the world, but in Britain it will be towards the end of the third millennium BCE – roughly 2300-2000 BCE. The method of working the metal is also a crucial factor for ageing. Casting of iron only became possible during the Industrial Revolution innorth-west
THE CHEMISTRY BEHIND ICE CREAM In ice cream, tiny droplets of fat are dispersed through the water. The fat comes from the cream, mostly in the form of triglycerides. During ice cream production they are aerosolised and broken down into tiny droplets. Milk proteins, which are also added during the production process, coat the fat droplets and prevent them frominteracting
SAHARAN DUST AND ITS JOURNEY AROUND THE WORLD Saharan dust and its journey around the world. S aharan dust is a mixture of dust and sand from the Sahara Desert. When very strong winds pass over the desert, this mixture blows up into the sky to form clouds, which can reach astonishingly high altitudes. Winds in the upper part of the atmosphere then transport these dust clouds, alsoknown as
AMPHIBIOUS ASSAULT VEHICLE UP CLOSE Amphibious Assault Vehicle up close. Owned by the US Marine Corps, the Amphibious Assault Vehicle (AAV) is a ship-to-shore troop transporter and fully armed combat vehicle. The AAV weighs close to 30 tons and can carry 21 combat-ready Marines and a crew of three. The amphibious tanks launch from the sea-level well decks of assault ships andHOW IS MONEY MADE?
8. Cutting to size. In order to separate the individual notes, stacks of sheets are put through a guillotine. 9. Final checks. Notes are then stacked, checked, tested and counted again. 10. Off to the banks. Finally, notes are packaged in bundles and stored in secure cages ready for transport.HOW IT WORKS
Feed your mind with fascinating facts about the world around us HAVE WE DISCOVERED ALL THE LAND ON EARTH? The entire landscape is buried under ice that can reach depths of up to five kilometres. Rocky ground that is yet to be mapped lies hidden far beneath the frost, including the world’s sixth-largest lake by volume. Scientists studying our changing climate are drilling down to HOW WATER TURBINES WORK Turbines are usually fixed in place, so when a fluid flows through it there is a drop in pressure at the back edge of each blade that causes the turbine to turn. The principle is the same for air or water and the faster the medium is moving, the greater theHOW IT WORKS
The Royal Photographic Society has chosen this year’s best International Images for Science featuring stunning photography frommedicine,
HOW IT WORKS
With Typhoon Haiyan tipped to be the biggest storm ever to hit land, find out more about this deadly weather nowHOW IT WORKS
From the creators of the bestselling videogames cheats magazine comes the stunning new PowerStation App – the only multiformat choice forvideogamers of
HOW IT WORKS
Discover Earth’s mightiest river and the rainforest wilderness that surrounds its banks The Amazon is one of Earth’s two longest rivers. It stretches an incredible 6,800 kilometres (4,225 miles) west to eastacross South
WHERE DOES LAS VEGAS GET ITS POWER FROM? Like every other US city, Las Vegas draws power from a national electrical grid supplied by more than 6,000 power-generating units fuelled by coal, natural gas, oil, the Sun, moving water and more. The only exception is the sprawling new CityCenter hotel and casino complex, which is so large that it boasts its own ‘off-the-grid’electrical
HOW IT WORKS
Meet the man who coined the term ‘nova’ and calculated planetary motion before telescopes Few other naked-eye astronomers have plotted the movement of planets quite as accurately as Danish nobleman TychoBrahe.
HOW IS MONEY MADE?
8. Cutting to size. In order to separate the individual notes, stacks of sheets are put through a guillotine. 9. Final checks. Notes are then stacked, checked, tested and counted again. 10. Off to the banks. Finally, notes are packaged in bundles and stored in secure cages ready for transport. HOW LONG IS A SECOND? The old definition of a second was based on the rotation of the Earth. As it takes the Sun one day to rise in the east, set in the west and rise again, a day was almost arbitrarily divided into 24 hours, the hour into 60 minutes, and the minute into 60 seconds. However, the Earth doesn’t rotate uniformly. In fact, it’s rotation decreasesat
HOW DO OVENS COOK FOOD? How do ovens cook food? There are two main varieties of household oven – gas and electric – with a few hybrids between the two. The former work by burning gas to warm a heating element and/or a metal cooking compartment directly. The gas supply is ignited using an electric lighter that proceeds through one or more burner units towarm the
THE IMPACT OF CATTLE FARMING The environmental consequences of cattle farming range from the detrimental effects on the ozone layer that a billion cows passing digestive gases has to the change in landscape and removal of trees in the creation of farm-friendly areas. Cattle farming generates income for millions of farmers, though many aim to achieve more sustainablefarming.
HOW WATER TURBINES WORK Turbines are usually fixed in place, so when a fluid flows through it there is a drop in pressure at the back edge of each blade that causes the turbine to turn. The principle is the same for air or water and the faster the medium is moving, the greater the HOW CAN WE AGE METAL ITEMS? The date of the discovery of metal-working is going to vary in different parts of the world, but in Britain it will be towards the end of the third millennium BCE – roughly 2300-2000 BCE. The method of working the metal is also a crucial factor for ageing. Casting of iron only became possible during the Industrial Revolution innorth-west
HOW IS MONEY MADE?
8. Cutting to size. In order to separate the individual notes, stacks of sheets are put through a guillotine. 9. Final checks. Notes are then stacked, checked, tested and counted again. 10. Off to the banks. Finally, notes are packaged in bundles and stored in secure cages ready for transport. HOW LONG IS A SECOND? The old definition of a second was based on the rotation of the Earth. As it takes the Sun one day to rise in the east, set in the west and rise again, a day was almost arbitrarily divided into 24 hours, the hour into 60 minutes, and the minute into 60 seconds. However, the Earth doesn’t rotate uniformly. In fact, it’s rotation decreasesat
HOW DO OVENS COOK FOOD? How do ovens cook food? There are two main varieties of household oven – gas and electric – with a few hybrids between the two. The former work by burning gas to warm a heating element and/or a metal cooking compartment directly. The gas supply is ignited using an electric lighter that proceeds through one or more burner units towarm the
THE IMPACT OF CATTLE FARMING The environmental consequences of cattle farming range from the detrimental effects on the ozone layer that a billion cows passing digestive gases has to the change in landscape and removal of trees in the creation of farm-friendly areas. Cattle farming generates income for millions of farmers, though many aim to achieve more sustainablefarming.
HOW WATER TURBINES WORK Turbines are usually fixed in place, so when a fluid flows through it there is a drop in pressure at the back edge of each blade that causes the turbine to turn. The principle is the same for air or water and the faster the medium is moving, the greater the HOW CAN WE AGE METAL ITEMS? The date of the discovery of metal-working is going to vary in different parts of the world, but in Britain it will be towards the end of the third millennium BCE – roughly 2300-2000 BCE. The method of working the metal is also a crucial factor for ageing. Casting of iron only became possible during the Industrial Revolution innorth-west
HOW DO CHICKENS LAY EGGS? The laying process starts when light entering the hen’s eye activates a photosensitive gland (the pineal gland) positioned nearby. Once stimulated, this gland triggers a process that leads to the release of an egg, or oocyte, from the hen’s ovary. An egg can still be laid whether or not it has been fertilised by a male, but onlyfertilised
15 AMAZING SCIENCE FACTS THAT WILL BLOW YOUR MIND 1. Babies have around 100 more bones than adults. Babies have about 300 bones at birth, with cartilage between many of them. This extra flexibility helps them pass through the birth canal and also allows for rapid growth. With age, many of the bones fuse, leaving 206 bones that make up an average adult skeleton. 2. PANNING FOR GOLD IN THE 1800S Also watch out for fellow prospectors stealing your territory! 3. Start to pan. Panning is the simplest way to find gold. Swirl a mixture of water and dirt, and the heavier nuggets will sink to the bottom of the pan. The gold will rush downstream, so make sure you catch it before your rivals do! 4. Tools of the trade. FOOD SCIENCE: HOW IS FAKE MEAT MADE? What makes it seemingly ‘impossible’ is that its looks, feels and tastes like ground beef – but is entirely made from plants. Engineered by Silicon Valley-based Impossible Foods, this fake meat makes clever use of vegetable fats and proteins so that it even bleeds and sizzles when you cook it. And it’s becoming big business.HOW IT WORKS
Feed your mind with fascinating facts about the world around us HOW DO HUMANS SPEAK? Movement of the vocal folds is controlled by the vagus nerve, and sound is then further fine-tuned to form words and sounds that we can recognise by the larynx, tongue and lips. Fundamental frequency in males averages at 125Hz, and at 210Hz in females. Children have a HOW DID THE SLAVE TRADE END? Having been split from their families, people were forced aboard cramped and disease-ridden ships for months. Life at sea involved brutal physical and emotional abuse, with around 15 per cent dying on the journey. Some feared losing their lives on board, while others feared the lives they were sailing towards, and were force fed by crewas they
WIN ONE OF TWO ROBOT KITS WORTH £110 EACH! For more science and technology articles, pick up the latest copy of How It Works from all good retailers or from our website now. If you have a tablet or smartphone, you can also download the digital version onto your iOS or Android device. To make sure you never miss an issue of How It Works magazine, subscribe today! 15 AMAZING SCIENCE FACTS THAT WILL BLOW YOUR MIND 1. Babies have around 100 more bones than adults. Babies have about 300 bones at birth, with cartilage between many of them. This extra flexibility helps them pass through the birth canal and also allows for rapid growth. With age, many of the bones fuse, leaving 206 bones that make up an average adult skeleton. 2. THE IMPACT OF CATTLE FARMING The environmental consequences of cattle farming range from the detrimental effects on the ozone layer that a billion cows passing digestive gases has to the change in landscape and removal of trees in the creation of farm-friendly areas. Cattle farming generates income for millions of farmers, though many aim to achieve more sustainablefarming.
HOW IT WORKS
From the creators of the bestselling videogames cheats magazine comes the stunning new PowerStation App – the only multiformat choice forvideogamers of
HOW DENTAL DRILLS WORK The laser drill achieves this by combining the high-speed pulsed light from a laser with an atomised spray of water droplets to generate hydrokinetic energy. Air-abrasion drills, meanwhile, work like a mini sandblaster that fires a stream of abrasive powder (such as silica or aluminium oxide) at the tooth to blast the decay away. We were unable FOOD SCIENCE: HOW IS FAKE MEAT MADE? What makes it seemingly ‘impossible’ is that its looks, feels and tastes like ground beef – but is entirely made from plants. Engineered by Silicon Valley-based Impossible Foods, this fake meat makes clever use of vegetable fats and proteins so that it even bleeds and sizzles when you cook it. And it’s becoming big business. WHAT ARE THE DIFFERENT TYPES OF FROST? Image credit: Thomas Bresson. When dew forms and then freezes on a surface with a temperature of or below freezing, a white frost consisting of blobs of ice occurs. When surface temperature reaches freezing before dew has started to form, a feathery type of hoar frostoccurs.
THE IMPACT OF CATTLE FARMING The environmental consequences of cattle farming range from the detrimental effects on the ozone layer that a billion cows passing digestive gases has to the change in landscape and removal of trees in the creation of farm-friendly areas. Cattle farming generates income for millions of farmers, though many aim to achieve more sustainablefarming.
HOW IS MONEY MADE?
8. Cutting to size. In order to separate the individual notes, stacks of sheets are put through a guillotine. 9. Final checks. Notes are then stacked, checked, tested and counted again. 10. Off to the banks. Finally, notes are packaged in bundles and stored in secure cages ready for transport. FOOD SCIENCE: HOW IS FAKE MEAT MADE? What makes it seemingly ‘impossible’ is that its looks, feels and tastes like ground beef – but is entirely made from plants. Engineered by Silicon Valley-based Impossible Foods, this fake meat makes clever use of vegetable fats and proteins so that it even bleeds and sizzles when you cook it. And it’s becoming big business. PANNING FOR GOLD IN THE 1800S Also watch out for fellow prospectors stealing your territory! 3. Start to pan. Panning is the simplest way to find gold. Swirl a mixture of water and dirt, and the heavier nuggets will sink to the bottom of the pan. The gold will rush downstream, so make sure you catch it before your rivals do! 4. Tools of the trade. HOW DO PARKING SENSORS WORK? How cars can take over the parking process. 1. Smart sense. Parking systems use a car’s ultrasonic sensors in a smart way. Below a set speed, the two outside ultrasonic sensors on the bumpers scan sideways and measure sudden changes in distance that indicate the presence of aspace. 2.
HOW WATER TURBINES WORK Turbines are usually fixed in place, so when a fluid flows through it there is a drop in pressure at the back edge of each blade that causes the turbine to turn. The principle is the same for air or water and the faster the medium is moving, the greater the HOW ARE DEEP-SEA CABLES LAID? Carrying pulses of light fired by powerful lasers, which can then be decoded as data, these cutting-edge cables send information at incredible speed. Today companies like Google, Facebook and Amazon are spending billions of dollars on infrastructure to boost their bandwidth, by laying their own fibre optic cables across the world’soceans.
HOW CAN WE AGE METAL ITEMS? The date of the discovery of metal-working is going to vary in different parts of the world, but in Britain it will be towards the end of the third millennium BCE – roughly 2300-2000 BCE. The method of working the metal is also a crucial factor for ageing. Casting of iron only became possible during the Industrial Revolution innorth-west
WHY WAS ALCATRAZ SO HARD TO ESCAPE FROM? First of all, Alcatraz was on an island. Well, if you can call it that. It was little more than a rocky outcrop on which little raft-making or camouflage-creating foliage grew. This meant that any escape either had to involve a plane, boat or a long, hard swim. The water can often drop to 16 degrees C (60 degrees F) and the currentswill slosh
CLEANING THE BLOOD: HOW DOES DIALYSIS WORK? This joins an artery to a vein, allowing blood to flow quickly in and out of a haemodialysis machine. These machines are essentially artificial kidneys, and they clean the blood in almost the same way. Blood enters the machine and passes over a semi-permeable membrane. Dialysis fluid passes in the opposite direction on the other side. THE IMPACT OF CATTLE FARMING The environmental consequences of cattle farming range from the detrimental effects on the ozone layer that a billion cows passing digestive gases has to the change in landscape and removal of trees in the creation of farm-friendly areas. Cattle farming generates income for millions of farmers, though many aim to achieve more sustainablefarming.
HOW IS MONEY MADE?
8. Cutting to size. In order to separate the individual notes, stacks of sheets are put through a guillotine. 9. Final checks. Notes are then stacked, checked, tested and counted again. 10. Off to the banks. Finally, notes are packaged in bundles and stored in secure cages ready for transport. FOOD SCIENCE: HOW IS FAKE MEAT MADE? What makes it seemingly ‘impossible’ is that its looks, feels and tastes like ground beef – but is entirely made from plants. Engineered by Silicon Valley-based Impossible Foods, this fake meat makes clever use of vegetable fats and proteins so that it even bleeds and sizzles when you cook it. And it’s becoming big business. PANNING FOR GOLD IN THE 1800S Also watch out for fellow prospectors stealing your territory! 3. Start to pan. Panning is the simplest way to find gold. Swirl a mixture of water and dirt, and the heavier nuggets will sink to the bottom of the pan. The gold will rush downstream, so make sure you catch it before your rivals do! 4. Tools of the trade. HOW DO PARKING SENSORS WORK? How cars can take over the parking process. 1. Smart sense. Parking systems use a car’s ultrasonic sensors in a smart way. Below a set speed, the two outside ultrasonic sensors on the bumpers scan sideways and measure sudden changes in distance that indicate the presence of aspace. 2.
HOW WATER TURBINES WORK Turbines are usually fixed in place, so when a fluid flows through it there is a drop in pressure at the back edge of each blade that causes the turbine to turn. The principle is the same for air or water and the faster the medium is moving, the greater the HOW ARE DEEP-SEA CABLES LAID? Carrying pulses of light fired by powerful lasers, which can then be decoded as data, these cutting-edge cables send information at incredible speed. Today companies like Google, Facebook and Amazon are spending billions of dollars on infrastructure to boost their bandwidth, by laying their own fibre optic cables across the world’soceans.
HOW CAN WE AGE METAL ITEMS? The date of the discovery of metal-working is going to vary in different parts of the world, but in Britain it will be towards the end of the third millennium BCE – roughly 2300-2000 BCE. The method of working the metal is also a crucial factor for ageing. Casting of iron only became possible during the Industrial Revolution innorth-west
WHY WAS ALCATRAZ SO HARD TO ESCAPE FROM? First of all, Alcatraz was on an island. Well, if you can call it that. It was little more than a rocky outcrop on which little raft-making or camouflage-creating foliage grew. This meant that any escape either had to involve a plane, boat or a long, hard swim. The water can often drop to 16 degrees C (60 degrees F) and the currentswill slosh
CLEANING THE BLOOD: HOW DOES DIALYSIS WORK? This joins an artery to a vein, allowing blood to flow quickly in and out of a haemodialysis machine. These machines are essentially artificial kidneys, and they clean the blood in almost the same way. Blood enters the machine and passes over a semi-permeable membrane. Dialysis fluid passes in the opposite direction on the other side.HOW IT WORKS
Feed your mind with fascinating facts about the world around us HAVE WE DISCOVERED ALL THE LAND ON EARTH? The entire landscape is buried under ice that can reach depths of up to five kilometres. Rocky ground that is yet to be mapped lies hidden far beneath the frost, including the world’s sixth-largest lake by volume. Scientists studying our changing climate are drilling down toHOW IT WORKS
With Typhoon Haiyan tipped to be the biggest storm ever to hit land, find out more about this deadly weather now WIN ONE OF TWO ROBOT KITS WORTH £110 EACH! For more science and technology articles, pick up the latest copy of How It Works from all good retailers or from our website now. If you have a tablet or smartphone, you can also download the digital version onto your iOS or Android device. To make sure you never miss an issue of How It Works magazine, subscribe today! HOW WATER TURBINES WORK Turbines are usually fixed in place, so when a fluid flows through it there is a drop in pressure at the back edge of each blade that causes the turbine to turn. The principle is the same for air or water and the faster the medium is moving, the greater the WHAT ARE THE DIFFERENT TYPES OF FROST? Image credit: Thomas Bresson. When dew forms and then freezes on a surface with a temperature of or below freezing, a white frost consisting of blobs of ice occurs. When surface temperature reaches freezing before dew has started to form, a feathery type of hoar frostoccurs.
THE ANATOMY OF LAUGHTER Laughter is the result when we exhale while the vocal cords close, with the respiratory muscles periodically activating to produce the characteristic rhythmic sound of laughing. The risorius muscle is also used to smile, but affects a smaller portion of the face and is easier to control than the zygomatic muscles. LAW AND ORDER IN THE OLD WEST This was. especially prevalent in the Old West, where the colonists were mostly left to take the law into their own hands, and their ability to play the role of judge, jury and executioner led to a unique and dangerous form of justice. When colonists first endured the gruelling journey to the western regions and discovered the potentialHOW IT WORKS
With just two sleeps till Christmas, you’ll want some of these facts to tell around the dinner table to make up for those awful Christmascracker jokes
SPACE ARTICLES
The Solar System’s innermost planet travels through a curvature in the fabric of space-time HOW LONG IS A SECOND? The old definition of a second was based on the rotation of the Earth. As it takes the Sun one day to rise in the east, set in the west and rise again, a day was almost arbitrarily divided into 24 hours, the hour into 60 minutes, and the minute into 60 seconds. However, the Earth doesn’t rotate uniformly. In fact, it’s rotation decreasesat
THE IMPACT OF CATTLE FARMING The environmental consequences of cattle farming range from the detrimental effects on the ozone layer that a billion cows passing digestive gases has to the change in landscape and removal of trees in the creation of farm-friendly areas. Cattle farming generates income for millions of farmers, though many aim to achieve more sustainablefarming.
HOW DOES THE LIVER DETOXIFY? How does the liver detoxify? Toxins enter the body in food, water, through the skin and by inhalation. These toxins – such as pesticides, pharmaceutical drugs, chemicals and water-borne pollutants – end up in our bloodstream, and our liver filters the blood to remove them. Toxins are also created by biochemical reactions in thebody.
WHAT ARE THE DIFFERENT TYPES OF FROST? Image credit: Thomas Bresson. When dew forms and then freezes on a surface with a temperature of or below freezing, a white frost consisting of blobs of ice occurs. When surface temperature reaches freezing before dew has started to form, a feathery type of hoar frostoccurs.
PANNING FOR GOLD IN THE 1800S Also watch out for fellow prospectors stealing your territory! 3. Start to pan. Panning is the simplest way to find gold. Swirl a mixture of water and dirt, and the heavier nuggets will sink to the bottom of the pan. The gold will rush downstream, so make sure you catch it before your rivals do! 4. Tools of the trade. HOW DO BAGPIPES WORK? The player blows into the aptly named blowpipe, filling the bag with air. It is the job of the player to continually fill the bag and squeeze the air out with their arm while playing the chanter. Air passes through reeds within the pipes, creating the continuous sound expelled from the drone pipes at the top of the bagpipes and thechanter at
HOW ARE DEEP-SEA CABLES LAID? Carrying pulses of light fired by powerful lasers, which can then be decoded as data, these cutting-edge cables send information at incredible speed. Today companies like Google, Facebook and Amazon are spending billions of dollars on infrastructure to boost their bandwidth, by laying their own fibre optic cables across the world’soceans.
FOOD SCIENCE: HOW IS FAKE MEAT MADE? What makes it seemingly ‘impossible’ is that its looks, feels and tastes like ground beef – but is entirely made from plants. Engineered by Silicon Valley-based Impossible Foods, this fake meat makes clever use of vegetable fats and proteins so that it even bleeds and sizzles when you cook it. And it’s becoming big business. HOW DO TIME-RELEASE PILLS WORK? by How It Works Team · 12/10/2010. Time-release pills are designed to release a steady stream of a drug into your system over a certain period of time (six to eight hours) instead of an instant ‘hit’ of the drug in one go. This can be especially useful for continual suppression of unwanted symptoms of certain diseases or whenpainkillers
WHY WAS ALCATRAZ SO HARD TO ESCAPE FROM? First of all, Alcatraz was on an island. Well, if you can call it that. It was little more than a rocky outcrop on which little raft-making or camouflage-creating foliage grew. This meant that any escape either had to involve a plane, boat or a long, hard swim. The water can often drop to 16 degrees C (60 degrees F) and the currentswill slosh
HOW LONG IS A SECOND? The old definition of a second was based on the rotation of the Earth. As it takes the Sun one day to rise in the east, set in the west and rise again, a day was almost arbitrarily divided into 24 hours, the hour into 60 minutes, and the minute into 60 seconds. However, the Earth doesn’t rotate uniformly. In fact, it’s rotation decreasesat
THE IMPACT OF CATTLE FARMING The environmental consequences of cattle farming range from the detrimental effects on the ozone layer that a billion cows passing digestive gases has to the change in landscape and removal of trees in the creation of farm-friendly areas. Cattle farming generates income for millions of farmers, though many aim to achieve more sustainablefarming.
HOW DOES THE LIVER DETOXIFY? How does the liver detoxify? Toxins enter the body in food, water, through the skin and by inhalation. These toxins – such as pesticides, pharmaceutical drugs, chemicals and water-borne pollutants – end up in our bloodstream, and our liver filters the blood to remove them. Toxins are also created by biochemical reactions in thebody.
WHAT ARE THE DIFFERENT TYPES OF FROST? Image credit: Thomas Bresson. When dew forms and then freezes on a surface with a temperature of or below freezing, a white frost consisting of blobs of ice occurs. When surface temperature reaches freezing before dew has started to form, a feathery type of hoar frostoccurs.
HOW DO BAGPIPES WORK? The player blows into the aptly named blowpipe, filling the bag with air. It is the job of the player to continually fill the bag and squeeze the air out with their arm while playing the chanter. Air passes through reeds within the pipes, creating the continuous sound expelled from the drone pipes at the top of the bagpipes and thechanter at
HOW ARE DEEP-SEA CABLES LAID? Carrying pulses of light fired by powerful lasers, which can then be decoded as data, these cutting-edge cables send information at incredible speed. Today companies like Google, Facebook and Amazon are spending billions of dollars on infrastructure to boost their bandwidth, by laying their own fibre optic cables across the world’soceans.
PANNING FOR GOLD IN THE 1800S Also watch out for fellow prospectors stealing your territory! 3. Start to pan. Panning is the simplest way to find gold. Swirl a mixture of water and dirt, and the heavier nuggets will sink to the bottom of the pan. The gold will rush downstream, so make sure you catch it before your rivals do! 4. Tools of the trade. FOOD SCIENCE: HOW IS FAKE MEAT MADE? What makes it seemingly ‘impossible’ is that its looks, feels and tastes like ground beef – but is entirely made from plants. Engineered by Silicon Valley-based Impossible Foods, this fake meat makes clever use of vegetable fats and proteins so that it even bleeds and sizzles when you cook it. And it’s becoming big business. HOW DO TIME-RELEASE PILLS WORK? by How It Works Team · 12/10/2010. Time-release pills are designed to release a steady stream of a drug into your system over a certain period of time (six to eight hours) instead of an instant ‘hit’ of the drug in one go. This can be especially useful for continual suppression of unwanted symptoms of certain diseases or whenpainkillers
WHY WAS ALCATRAZ SO HARD TO ESCAPE FROM? First of all, Alcatraz was on an island. Well, if you can call it that. It was little more than a rocky outcrop on which little raft-making or camouflage-creating foliage grew. This meant that any escape either had to involve a plane, boat or a long, hard swim. The water can often drop to 16 degrees C (60 degrees F) and the currentswill slosh
HOW IT WORKS
Feed your mind with fascinating facts about the world around us WIN ONE OF TWO ROBOT KITS WORTH £110 EACH! For more science and technology articles, pick up the latest copy of How It Works from all good retailers or from our website now. If you have a tablet or smartphone, you can also download the digital version onto your iOS or Android device. To make sure you never miss an issue of How It Works magazine, subscribe today!HOW IS MONEY MADE?
8. Cutting to size. In order to separate the individual notes, stacks of sheets are put through a guillotine. 9. Final checks. Notes are then stacked, checked, tested and counted again. 10. Off to the banks. Finally, notes are packaged in bundles and stored in secure cages ready for transport. THE IMPACT OF CATTLE FARMING The environmental consequences of cattle farming range from the detrimental effects on the ozone layer that a billion cows passing digestive gases has to the change in landscape and removal of trees in the creation of farm-friendly areas. Cattle farming generates income for millions of farmers, though many aim to achieve more sustainablefarming.
HOW IT WORKS
With just two sleeps till Christmas, you’ll want some of these facts to tell around the dinner table to make up for those awful Christmascracker jokes
FOOD SCIENCE: HOW IS FAKE MEAT MADE? What makes it seemingly ‘impossible’ is that its looks, feels and tastes like ground beef – but is entirely made from plants. Engineered by Silicon Valley-based Impossible Foods, this fake meat makes clever use of vegetable fats and proteins so that it even bleeds and sizzles when you cook it. And it’s becoming big business.HOW IT WORKS
Image credit: Tadasu K. Yamada et al., Scientific Reports. August 30, 2019 At the northernmost point of Japan’s mainland, Hokkaido, a new species of whale has been confirmed. HOW DOES A CHICKEN GROW INSIDE AN EGG? 14 to 17 days’ incubation. The embryo now fully resembles a chick, down has covered its body, and days 15 and 16 are spent growing. By day 17, the egg white is used up, and the chick starts to get into hatching position. Hatching. After 20 days, the HOW WAS THE GIANT’S CAUSEWAY FORMED? How It Works. On the north-east coast of County Antrim in Northern Ireland lies an unusual rock formation capable of drawing in millions of visitors from around the world every year. They flock to see a vast plateau of polygonal basalt columns, known as the Giant’s Causeway, which looks like a carpet of enormous steppingstones extending outinto the Irish Sea.
THE CHEMISTRY BEHIND ICE CREAM In ice cream, tiny droplets of fat are dispersed through the water. The fat comes from the cream, mostly in the form of triglycerides. During ice cream production they are aerosolised and broken down into tiny droplets. Milk proteins, which are also added during the production process, coat the fat droplets and prevent them frominteracting
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Brain Dump
26/04/2020
WHAT IS THE TREE LINE? (Image credit: Nathan Anderson) Question from Ahmed Ali The tree line is the highest point in a habitat where trees can grow. The low temperatures and dry conditions at high altitude make it difficult...*
Environment
29/04/2020
LIFE IN A ROCK POOL
Rock pools may only be small bodies of water, but they are full of marine life (Image source: Pixabay) Rock pools are coastline ecosystems found in the intertidal zone of many beaches around the...*
Environment
28/04/2020
HOW DO CAT PAWS WORK? A cat’s paws are vital to keep the feline alive and kicking. They can help perform many functions from shock absorbing and self- defence to cleaning, killing and climbing (Image source: Pixabay) Unlikeother...
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Brain Dump
26/04/2020
WHAT IS THE TREE LINE? (Image credit: Nathan Anderson) Question from Ahmed Ali The tree line is the highest point in a habitat where trees can grow. The low temperatures and dry conditions at high altitude make it difficult...*
Environment
29/04/2020
LIFE IN A ROCK POOL
Rock pools may only be small bodies of water, but they are full of marine life (Image source: Pixabay) Rock pools are coastline ecosystems found in the intertidal zone of many beaches around the...* 1
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Brain Dump
25/04/2020
WHY DOES YOUR TEMPERATURE FLUCTUATE WHEN YOU HAVE A FEVER? (Image source: Pixabay) Question from Lauren Lancaster When you have an infection, your body produces white blood cells to fight it. These affect your hypothalamus, the area of your brain that controls bodytemperature,...
History
24/04/2020
EVOLUTION OF THE BICYCLE How we learnt to get on our bikes The name bicycle was coined in 1869 but bicycle-like machines were built much earlier in this century. The walking machine of 1817 didn’t have pedals, but...Space
24/04/2020
HUBBLE SPACE TELESCOPE TURNS 30 Image credit: NASA Launched back in 1990 by the space shuttle Discovery, the Hubble Space Telescope has been orbiting Earth for three decades, peering into the great unknown of space. From capturesthe growing...
Science
24/04/2020
HOW TO GROW YOUR OWN GEODES Create crystals inside eggshells to make these wonderful geode-like structures at home 1.Break the egg First, you need to carefully break some eggs as close to the narrow end as you can manage. This...Space
23/04/2020
WHAT IS THE OORT CLOUD? Discover the home of comets An Oort Cloud comet (Image credit: Mkfairdpm) The Oort Cloud is a giant sphere of icy cometary nuclei that surrounds our solar system. Its maximum distance is 1.9 light...Science
23/04/2020
WHY DO CERTAIN SMELLS BRING BACK MEMORIES? Image source: Pixabay Why do certain scents take you straight back to the past? The nose can pick up thousands of different chemical signals, allowing us to detect millions of different smells. Someof...
Technology
22/04/2020
WHY DO AEROPLANES NEED A BLACK BOX? How important aircraft data is designed to survive the worst disasters Black box recorders are used to retrieve data about an aeroplane and its operating environment in the event of a crash. There are...Environment
22/04/2020
EARTH DAY 2020: OUR PLANET’S ATMOSPHERE It’s all around us, but how much do we know about Earth’s atmosphere? (Image source: Pixabay) Our atmosphere (made up of 78 per cent nitrogen and 21 per cent oxygen, with other gases making...Environment
22/04/2020
HOW DO PLANTS TRANSPORT WATER? Image source: Pixabay Plants might look static, but they’re hydraulic engineers that are always at work Water is vital to plants. From growth and photosynthesis to flowering and keeping their leavesin shape, they...
Technology
21/04/2020
INSIDE AN MRI SCANNER When doctors need the highest quality images possible they turn to MRI scanners, but how do they work? (Image source: Pixabay) Doctors often plan treatments based on imaging. X-rays, ultrasound and CT scansprovide...
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