Children and teens From 6 years
L'oreille des kids
Through fun experiments and helped by experts in the field, Chris examines a subject from every angle to explain it in a way that's both captivating and entertaining.


Children and teens | From 6 years
Through fun experiments and helped by experts in the field, Chris examines a subject from every angle to explain it in a way that's both captivating and entertaining.
Episode 1
10 min
Looping the loop
What's looping the loop? What do you feel when you do a loop-the-loop on a roller-coaster or a big wheel? Why, when you're head downwards during a loop-the-loop, don't you fall? How do fighter pilots manage when they fly upside down?
Episode 2
11 min
Combustion
Why do some things burn and not others? And what exactly is fire? Are there materials that don't burn? Can water burn? All these questions find their answers when you study combustion.
Episode 3
10 min
Ballistics
Episode 4
11 min
Superfusion
Turn water into ice, instantly. Science or fiction? How long does it take for a bottle of water to freeze in a freezer? Can you walk on a lake by making it freeze as you take each step? Can you keep water in liquid form below 0°C?
Episode 5
12 min
Levitation
Can someone or an object remain suspended in the air? Are Tibetan monks, fakirs and illusionists really capable of levitating? Levitation, science or fiction?
Episode 6
12 min
Walking on water
Is it possible to walk on water? Does is require very special conditions?
Episode 7
12 min
When the ice melts
Will sea-level rise if the icebergs at the North Pole melt? How are icebergs formed? Will the glaciers in the mountains make the sea-level rise if they melt too quickly? Does the Antarctic continent behave in the same way as the Arctic?
Episode 8
12 min
Ultrasound and infrasound
Can we hear all sounds? What is the difference between infrasounds and ultrasounds? How do dolphins, killer whales and dogs hear?
Episode 9
12 min
The Bermuda Triangle
What is the Bermuda Triangle? What happened in this area of the Atlantic Ocean? Do you know the legends that are told about this zone?
Episode 10
10 min
Hydrokinesis
Is it possible to make a net move without touching it? Can you alter the course of water from a distance? How do water diviners detect the presence of underground water? Can you detect water in the ground when it's in the form of ice?
Episode 11
13 min
Cartoons
We watch them every day, and yet... How are cartoons made? How many drawings are needed to make an episode of "Titeuf"? Does a cartoon work in the same way as a fil
Episode 12
12 min
Chocolate muscles
Superman is able to lift a whole island. In reality, what quantity of energy would you have to consume to manage that sort of amazing feat? If all that energy was turned into chocolate, how much chocolate would you have to eat to lift an island?
Episode 13
11 min
Hot, hotter, hottest!
If you rub your hands together, they get warmer, and if someone slaps you your ears become red. But are both effects caused by the same phenomenon? Can you light a fire without matches?
Episode 14
12 min
The greenhouse effect
What is the greenhouse effect? Has it always existed on Earth? Is it dangerous? What is global warming? What is a greenhouse gas? What do the greenhouse effect and a garden greenhouse have in common?
Episode 15
12 min
Pulleys
What are the pulleys on a building site crane used for? Can you use several pulleys to lift a load more easily? How can a lorry crane lift 50 tonnes without turning over?
Episode 16
12 min
Wind in the sails
How does a sailing ship move forwards when there is no wind? If a large fan is placed on a boat so that it blows air into the sails, will it sail faster? Captain Chris and the apprentice sailors explain how a sailing ship works and the importance of wind.
Episode 17
12 min
Mirages
What is a mirage? Something that doesn't exist? An optical illusion? How does a mirage form, and under what conditions? Can you touch, feel or create a mirage? Do you have to believe in them to see them?
Episode 18
13 min
Hydrophilic, hydrophobic
How does a raincoat stop the water coming through? Are there materials that are naturally hydrophobic? Why doesn't food stick to the bottom of the frying pan? How does water slide straight off certain leaves?
Episode 19
12 min
Siphon
What is a siphon? What does it do? How does water flow through a siphon? Do they exist naturally? Does it work with any liquid? Why does the flow sometimes stop for no apparent reason?
Episode 20
12 min
Seeing under water
How can we see clearly under water? How do fish manage? How does our eye work?
Episode 21
12 min
Hydrostatic pressure
Why does an object plunged into the water to a certain depth change shape? Why do our ear drums get blocked when we swim deep under water? How do divers manage to remain underwater for so long, without breathing? What is the record for free diving?
Episode 22
12 min
Refraction
Does light always travel at the same speed? How does it behave when passing through water? How does a magnifying glass work? Can you change the way a precious stone sparkles by cutting it in a different way?
Episode 23
11 min
Whiplash
What is whiplash? Where does the French expression "coup du lapin" come from? What happens you receive an impact from behind? Can we protect ourselves from it?
Episode 24
13 min
Birds on electricity wires
When birds perch on electricity wires why don't they get electrocuted? How do the maintenance workers do their job? What happens when a pylon falls over? Why should you never every touch a cable lying on the ground?
Episode 1
12 min
As the crow flies
Why does an air route between Geneva and New York go over Greenland? The Earth is round, so how do planes go in a straight line? How is a flight route represented on a map? Is a plane's route always the same or does is vary according to outside factors?
Episode 2
12 min
What's a germ?
Is a germ the same thing as a bacteria, a virus? Where are germs found? Are they harmful or inoffensive? What do they look like? How can we see them? Do they have a purpose?
Episode 3
10 min
Why do we have seasons?
What are seasons for? What's the difference between winter and summer, apart from the temperature?
Episode 4
10 min
Waste water
When we wash our hands, take a shower or go to the toilet, we make the water dirty and it then goes into the sewers. Bur then what happens to it, the so-called waste water?
Episode 5
10 min
What's a constellation?
How many constellations exist in the sky and who invented the patterns?
Episode 6
10 min
Black ice
What's black ice? In winter, the roads are salted to melt the ice. But how does that work? Is it the same as salt as we use in the kitchen? And what would happen if we used sugar instead of salt?
Episode 7
13 min
How do you measure the height of a building?
How can we measure the height of a mountain, a tower or anything else that can't be measured with a ruler?
Episode 8
12 min
DNA
What is DNA and what does it do? How can we find out someone's DNA?
Episode 9
13 min
Cryptography
How to send a secret, coded message that only the recipient can read? With the help of cryptography! Cryptography is everywhere around us, from the simple secret message you pass on to your neighbor to internet connections, including bank transfers.
Episode 10
12 min
Gravitropism
How does a plant know which is up and which is down, since it doesn't have eyes? And why do the roots of a tree grow in the ground and not above? It all depends on gravitropism!
Episode 11
11 min
What is a comet?
Since when do comets exist and what do they do?
Episode 12
11 min
How does a pressure-cooker work?
Why is it impossible to cook pasta on the summit of Everest? At an altitude of 4,000 metres, water already boils when it reaches 70°C, and pasta doesn't cook at that temperature! The only solution is to use a pressure-cooker.
Episode 13
11 min
What is a black hole?
Who has never been fascinated by black holes, those dots in the universe so dense that nothing can escape, not even light? But in reality, what is a black hole?
Episode 14
12 min
How to jump as high as possible?
At the Mexico Olympics in 1968, Dick Fosbury won the high jump gold medal. His technique? He jumped over the bar on his back rather than on his tummy. How did an apparently simple change in technique enable him to gain those precious extra centimetres?
Episode 15
11 min
Can we wake up after being frozen?
Certain seriously ill people have their bodies frozen whilst waiting for medicine to find a treatment to cure them. In films, they put astronauts to sleep in ice during interstellar journeys. This form of freezing is known as cryonics. But does the technique really exist?
Episode 16
12 min
Why does the white of an egg become hard when it's heated?
To make a hard-boiled egg, you simply need to heat it for a few minutes. The white coagulates and therefore becomes solid. What happens during this process? What other substances can coagulate?
Episode 17
12 min
How do glow worms make glow?
On a summer evening, have you ever seen little green lights shining in the grass? These are glow worms. But how can an insect produce light?
Episode 18
11 min
Why does soap clean?
Why do we have to use soap to wash? What is it made of? Why is it slippery when it's wet? What's the difference between Marseille soap made by artisans and that made in industrial factories?
Episode 19
11 min
Why does bread rise when it's baked?
Have you ever noticed that bread is full of air bubbles that make it look puffed up, compared, for example, to a pancake? Did you know that flat bread also exists? And, to start with, how do all those little air bubbles get inside the bread?
Episode 20
11 min
Water skiing
Why don't you sink into the water when you go water skiing? After all it's a liquid. Does the lake you ski on have to be sloping, frozen, solid? And at the swimming pool, have you ever done a belly flop? Is there a connection between the two?
Episode 21
11 min
Plants that move
A plant blown by the wind moves. But can a plant deliberately move all by itself?
Episode 22
12 min
Sun tan
What happens when you get a sun tan? Is it useful to get a sun tan, apart from having an attractive skin colour?
Episode 23
12 min
The solar system
Seen from the Earth, the moon and the sun are the same size and seem much smaller than our planet. But is it really the case? And what other planets exist in the solar system? How far is the Earth from the sun?
Episode 24
11 min
What is a 13-knot rope?
How did the Egyptians manage to define the perfect shape of the pyramids? How can you draw a square, a rectangle, an octagon or other geometric shapes, with neither a ruler nor a set square? All you need is a rope with 13 knots.
Episode 25
12 min
Are there mountains on the moon?
On Earth, there are mountains and the highest, Everest, reaches an altitude of 8,848 metres. But what about on the moon? Do mountains exist, how high are they, how were they formed?
Episode 26
10 min
Sat Nav
How does a sat nav work and is it found anywhere else, apart from in a car?
Episode 27
11 min
Cosmic rays
A multitude of rays are permanently passing through our bodies. When we climb in altitude (in a plane for example), this radiation is even greater. Bertrand Piccard explains the effect of these rays on his second round-the-world attempt aboard the "Solar Impulse 2".
Episode 28
12 min
Solar panels
"Solar Impulse 2", a revolutionary plane powered by solar energy, completed the first round-the-world tour without an internal combustion engine. How did the thin layers of glass and electronics covering it manage to produce electricity and enable it to fly? Bertrand Piccard, the pilot, explains.
Episode 29
12 min
Sleep
During their attempt to fly round the world in a solar-powered plane, the pilots of "Solar Impulse 2", Bertrand Piccard and André Borschberg, couldn't allow themselves to sleep more than 20 minutes at a time. How can anyone remain awake for several days and several nights? Bertrand Piccard explains.
Episode 30
11 min
Aerodynamics
Why don't a tractor and an F1 car have the same shape? Could a tractor fitted with a Formula 1 engine drive as fast as a racing car? Was the shape of "Solar Impulse 2" important for flying by solar power? Bertrand Piccard talks to us about aerodynamics.
Episode 31
12 min
Paragliders
What's the difference between a parachute and a paraglider? In what way is a paraglider similar to an aeroplane? How does the fabric of a paraglider keep its shape?
Episode 32
12 min
X-rays
What is an X-ray? What's it useful for? Can you see an X-ray?
Episode 33
12 min
Digestion
How do we transform our food into energy? How long does it take? Do animals digest like humans do?
Episode 34
13 min
Photosynthesis
Photosynthesis enables a plant to produce oxygen. But in practice, how does it actually happen? What is oxygen useful for? Where does oxygen come from and why isn't there any on the other planets of the solar system?
Episode 1
10 min
Tooth Decay
What is tooth decay? How do you get it and what can you do to avoid it? Is it true that children get tooth decay more easily than adults do?
Episode 2
10 min
Helium
Why, when you breathe helium, does your voice change to sound like a duck? Is breathing helium dangerous? Are there ways to change your voice other than by breathing helium?
Episode 3
11 min
The Chameleon
Why do chameleons change colour? To hide? To be seen from far away? How do they do it?
Episode 4
10 min
Spectroscopy
What is spectroscopy? It's the analysis of the light emitted by matter! Detailed explanations with Céline from the Scienscope at the University of Geneva.
Episode 5
11 min
Active sound cancelling headphones
What is a sound? Are certain sounds more dangerous for our hearing than others? How can we prevent loss of hearing? How do our ears work?
Episode 6
13 min
Perspective
Why, when we look at tram-lines, do we have the impression that they touch in the distance? Why does a car appear smaller from far away than nearby? Why, on a photograph of a street, do all the lines of the buildings seem to join up? It's all question of perspective...
Episode 7
11 min
Wheels that turn backwards
Why, in certain films, do we have the impression that wheels turn in the opposite direction to the direction in which the vehicle is driving? This is what's called the stroboscopic effect. But what exactly is it?
Episode 8
11 min
Fishing season
How can you count the number of fish in a lake? How can you estimate the number of Lego bricks in a box?
Episode 9
11 min
The fruit juice battery
Fruit can produce electricity. Really? So can you make a battery with fruit juice?
Episode 10
11 min
Levers
How can you lift a heavy load without getting tired? How can you open a pirate's treasure chest that's been sealed for years? With a lever...
Episode 11
11 min
Rocket fuel
What sort of fuel do rockets use to take off? If you put rocket fuel in a car, what would happen?
Episode 12
12 min
Landslides
What is a landslide? How can we prevent them? Just how dangerous are they?
Episode 13
12 min
Effervescence
Why is there a hiss when you open a bottle of fizzy water? Is there gas shut in the bottle? Is it dangerous to swallow the gas? And if we mix it with sweets, why does it spurt everywhere?
Episode 14
12 min
Mosquito bites
Why do mosquitoes bite us? Are they just nasty or do we actually need them, and their bites? And, by the way, why does it itch when we get bitten by a mosquito?
Episode 15
11 min
Dams
How do you build a "wall" over two hundred metres high between two mountains? Why do some dams have a curved shape whilst others are flat?
Episode 16
11 min
Memory
How does our memory work and are there ways of improving it? Is a big head synonymous with a large memory? How does our brain function in order to remember all our memories?
Episode 17
11 min
Stilts
How do stilts work, are there different types, is stilt-walking easier when you have big feet? For the answers to these questions and many more, we take to the heights!
Episode 18
11 min
Deciduous trees
Why do certain trees lose their leaves in the winter and not others? Are pine needles leaves? How do trees that lose their leaves know when it's time to lose them or to grow them again?
Episode 19
12 min
Fakirs
What do fakirs do to not get pricked when they lie on a bed of nails? Where does the strange tradition of sword-swallowing or cheek-piercing come from?
Episode 20
11 min
Legs that grow again
When we cut our hair, it grows again. On the other hand, if we cut a finger off, it doesn't grow back. And yet certain animals have the ability to regrow a leg that's been severed. How do they do it? Are humans able to?
Episode 21
12 min
Iceland: the geysers
Emblematic of Iceland, geysers are a very rare phenomenon that can only form under certain special conditions of hydrology and geology. With its height of thirty metres and its regular eructations, Strokkur offers the perfect introduction to our series about Iceland.
Episode 22
12 min
Iceland: the aurora borealis
Behind some of the most breathtaking spectacles we often find some of the most complex physics problems, beginning with the aurora borealis or northern lights. A rich source of artistic creation, myths and legends, they have long fascinated us and inspired our imagination.
Episode 23
11 min
Iceland: the Icelandic horse
The Icelandic horse is one of the rare breeds that have five natural gaits. In addition to the walk, trot and gallop, there is also the tölt and the flying pace. What are the advantages for the rider? Why is this animal so different from other horses and ponies?
Episode 24
12 min
Iceland: geothermal energy
Why is geothermal energy the pillar of the Icelandic economy?
Episode 25
11 min
Iceland: extremophiles
The extreme environments are home to some of the most unusual life forms, able to live in conditions that would be unbearable for most species. Welcome to the world of the extremophiles!
Episode 26
11 min
Iceland: the rift valley
A rift valley is a vast fracture in the Earth's crust that separates two tectonic plates. The one that separates America and Europe snakes its way from south to north, in the middle of the Atlantic Ocean. But in Iceland, this rift valley comes out into the daylight.
Episode 27
12 min
Energy-saving light bulbs
Have light bulbs evolved in recent years? What for? Why are incandescent light bulbs burning hot, whilst LED light bulbs remain cold?
Episode 28
13 min
Fear
Why are we afraid? Does everyone share the same fears? What are the physical signs of someone who is frightened?
Episode 29
12 min
Bats
Do bats really descend from vampires, as Chris thinks? How do they find their way about and how do they manage to sleep upside down?
Episode 30
10 min
Hydroelectricity
How can a dam make electricity? Why do we only find dams in the mountains and not in the valleys? To find out all there is to know about hydroelectricity we head for the Valais and to the top of the highest dam in the world: the Grande-Dixence.
Episode 31
11 min
Gills
How to fish manage to survive underwater? Do they breathe? If they breathe, how do they obtain their oxygen?
Episode 32
10 min
Vertigo
Sandrine takes Chris on a tree-top adventure course in the Valais to discover if he has a head for heights and to explain what vertigo is.
Through fun experiments and helped by experts in the field, Chris examines a subject from every angle to explain it in a way that's both captivating and entertaining.
Réalisation : Christian Baumann
Catégories Children and teens From 6 years
Casting :
Provenance : Switzerland
Partenaire :
La Radio Télévision Suisse (RTS) est une entreprise audiovisuelle de service public, appartenant au groupe média SSR (Société Suisse de radiodiffusion et télévision), qui propose des programmes sur quatre chaînes radio, deux chaînes tv et de nombreuses plateformes digitales.
https://www.rtsr.ch/
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