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Видео добавленное пользователем “NakedScientists”
How do thermoelectric generators work? - Naked Science Scrapbook
 
05:31
Huge amounts of energy are lost from power stations and cars as heat. But what if we could harness that heat and turn it into useful electricity? That's what thermoelectric generators or TEGs can help us do. In this Naked Science Scrapbook we find out how they exploit a temperature gradient to produce power and how they're already powering space exploration.More videos and podcasts from http://www.thenakedscientists.com
Просмотров: 134578 NakedScientists
How does a fuel cell work? - Naked Science Scrapbook
 
04:02
Fuel cells may be a major energy source of the future, but how do they work? In the latest Naked Science Scrapbook, we find out how to generate electricity from hydrogen, how fuel cells helped man to get to the moon, and how you could use one to heat your water at home...More videos and podcasts from http://www.thenakedscientists.com
Просмотров: 147765 NakedScientists
How does a microwave work? - Naked Science Scrapbook
 
04:36
Most of us have a microwave oven in our kitchen. They make heating up leftovers and the dreaded readymeal much faster than a conventional oven. In this Naked Science Scrapbook, we find out how the microwave oven produce the microwaves, and how they actually cook the food, plus how popcorn played a key role in the invention of the microwave oven...More videos and podcasts from http://www.thenakedscientists.com
Просмотров: 207414 NakedScientists
How does DNA fingerprinting work? - Naked Science Scrapbook
 
05:27
How do we tell people apart by using their DNA? From murder investigations to paternity testing, DNA fingerprinting is an essential tool in the modern world. But how is it carried out? Find out in the latest Naked Science Scrapbook!More videos and podcasts from http://www.thenakedscientists.com
Просмотров: 370077 NakedScientists
How do lasers work? - Naked Science Scrapbook
 
05:06
From DVD players and supermarket scanners to laser pointers and Bond movies, lasers are part of our lives. But just how do they work? In this Naked Science Scrapbook we find out how excitable atoms produce the laser beams and how those beams are used to perform surgery, send information through the internet and even measure the distance to the moon!More videos and podcasts from http://www.thenakedscientists.com
Просмотров: 58860 NakedScientists
How Does a Cake Rise? - Naked Science Scrapbook
 
02:36
What makes a cake rise? In this episode of the Naked Science Scrapbook, we'll find out what ingredients cause a baking cake to go from a gloopy mass to a light fluffy sponge...
Просмотров: 29965 NakedScientists
Why does water expand when it freezes? - Naked Science Scrapbook
 
02:31
Why does ice float in the cool summer drink of your choice? And why don't ponds and lakes freeze from the bottom up, killing all the fish? Find out with the latest Naked Science Scrapbook, where we'll see that it's all down to the weird and wonderful water molecules...More videos and podcasts from http://www.thenakedscientists.com
Просмотров: 121396 NakedScientists
How does the Internet work? - Naked Science Scrapbook
 
05:33
Whether you're watching a YouTube video, downloading an email, buying a birthday present or linking up with friends online, you're sending data across the Internet. But how does "the web" actually work, and what lies behind it? Here, in this Naked Science Scrapbook episode supported by 4D Data Centres, all is revealed...More videos and podcasts from http://www.thenakedscientists.com
Просмотров: 134461 NakedScientists
Why don't whales get the bends, when divers can? - Naked Science Scrapbook
 
07:14
If a diver surfaces too quickly after a dive, they can get the bends, or decompression sickness, causing excruciating pain and sometimes even death. In this Naked Science Scrapbook, find out what causes the bends, why human divers can get it and why (usually) whales don't...More videos and podcasts from http://www.thenakedscientists.com
Просмотров: 43995 NakedScientists
How does autofocus work? - Naked Science Scrapbook
 
04:56
Millions of people now own compact digital cameras and camera phones that will automatically focus on parts of a scene, without having to turn a focus wheel. But how does autofocus work? In this Naked Science Scrapbook we find out how battleship technology has found its way into cameras and why some autofocus cameras use ultrasound to figure out what to focus on...More videos and podcasts from http://www.thenakedscientists.com
Просмотров: 48995 NakedScientists
Where Does the Solar System End? - Naked Science Scrapbook
 
02:59
Launched in 1977 to study the Solar system's gas giant planets, Voyager 1 is still operating. But now it's so far away that the Solar wind has weakened and a deluge of cosmic particles from intergalactic space is assailing it. Now interstellar space awaits. But where does the Solar system end and this new frontier begin?More videos and podcasts from http://www.thenakedscientists.com
Просмотров: 28794 NakedScientists
How do we use Microbes to make Biohydrogen? - Naked Science Scrapbook
 
05:20
Hydrogen could be a key clean fuel of the future, powering cars, planes and technology. The challenge facing us before we can switch to this energy-dense fuel has been to produce it cleanly and efficiently. Now a team at the University of Birmingham have developed a way of harnessing the power of microbes to make it for us...More videos and podcasts from http://www.thenakedscientists.com
Просмотров: 12397 NakedScientists
How is cheese made? - Naked Science Scrapbook
 
06:06
Cheese is a major (and tasty) part of our diets and humans have been making it for thousands of years? But how is it made? In this Naked Science Scrapbook, we find out how we go from liquid milk to solid cheese and how the blue mould and pungent smell of blue cheeses is formed.More videos and podcasts from http://www.thenakedscientists.com
Просмотров: 54424 NakedScientists
Why do Chameleons change colour? - Naked Science Scrapbook
 
03:18
We all know chameleons can change their colour at will, but how do they do it? And is it really because of camouflage?
Просмотров: 32625 NakedScientists
Why does helium make your voice sound funny? - Naked Science Scrapbook
 
03:32
When you breathe in helium, why does your voice sound squeaky and like a chipmunk? Find out in the latest Naked Science Scrapbook!
Просмотров: 119101 NakedScientists
What is a fungus? - Naked Science Scrapbook
 
05:34
Fungi are a biologically important, and often overlooked Kingdom of organisms. In this Naked Science Scrapbook we find out what a fungus actually is, how they live and how they cause and fight disease. Plus we see that many of our favourite meals wouldn't be the same without them.More videos and podcasts from http://www.thenakedscientists.com
Просмотров: 152820 NakedScientists
What is an Alloy? - Naked Science Scrapbook
 
06:45
A lot of the metals we use every day, from car wheels to cutlery, are made from alloys. In this Naked Science Scrapbook we find out how alloys are made and how we change their properties to suit our needs. Plus we discover why alloys have a vital role to play when we fly off on holiday...More videos and podcasts from http://www.thenakedscientists.com
Просмотров: 108289 NakedScientists
Why are birds not electrocuted on power lines? - Naked Science Scrapbook
 
03:46
Why don't birds get fried when they sit on high voltage wires or power cables? Find out in the latest Naked Science Scrapbook!
Просмотров: 83677 NakedScientists
How does a lightbulb work? - Naked Science Scrapbook
 
03:33
What's actually going on in a lightbulb when you switch it on? And why are energy saving bulbs more efficient than normal incandescent ones? Find out in the latest Naked Science Scrapbook.More videos and podcasts from http://www.thenakedscientists.com
Просмотров: 21009 NakedScientists
How do Nerves Carry Information? - Naked Science Scrapbook
 
06:40
What do nerve cells look like, how do they carry information, and how does one nerve connect and communicate with another nerve? Find out in this spine-tingling Naked Science Scrapbook episode...More videos and podcasts from http://www.thenakedscientists.com
Просмотров: 23369 NakedScientists
What does a data centre do? - Naked Science Scrapbook
 
05:04
When companies can't back up their data themselves, they often turn to data centres. But what do they do? In this Naked Science Scrapbook, supported by 4D Data Centres, we find out how a data centre is designed to minimise environmental impact, and how they can prevent personal information from being stolen...More videos and podcasts from http://www.thenakedscientists.com
Просмотров: 7547 NakedScientists
Why do sprouts make you fart? - Naked Science Scrapbook
 
04:48
Every Christmas, one vegetable divides opinion � Brussels sprouts. Some of us love them, some of us hate them, but eating them can have some embarrassing consequences. In this Naked science Scrapbook, we find out why sprouts cause flatulence and what makes sprout-induced gas such an offensive addition to the Christmas table...More videos and podcasts from http://www.thenakedscientists.com
Просмотров: 21170 NakedScientists
What is the Higgs boson? - Naked Science Scrapbook
 
05:10
Scientists at the Large Hadron Collider have found evidence of a new fundamental particle, that could be the much sought-after Higgs boson. In this Naked Science Scrapbook we find out what a Higgs boson actually is, and why finding it could help us understand the structure of the universe a little bit better...More videos and podcasts from http://www.thenakedscientists.com
Просмотров: 13970 NakedScientists
Can mosquitoes transmit HIV? - Naked Science Scrapbook
 
04:06
Mosquitoes can transmit deadly diseases like malaria.But could they pass on HIV if they drank from an infected person? Find out with the Naked Science Scrapbook! More videos and podcasts from http://www.thenakedscientists.com
Просмотров: 17549 NakedScientists
How Does Laser Eye Surgery Work? - Naked Science Scrapbook
 
04:56
Why are some people short sighted and some people long sighted? And how do we use something more usually associated with a Bond villain to correct someone's eyesight? Find out in the latest Naked Science Scrapbook!More videos and podcasts from http://www.thenakedscientists.com
Просмотров: 18082 NakedScientists
Opening a wine bottle without a corkscrew - the science
 
02:57
How to open a wine bottle without a corkscrew or even touching the cork, just by hitting it against a wall protected by a newspaper or a shoe. Find out what is going on and the science behind it.
Просмотров: 37844 NakedScientists
Why do storm clouds have flat tops? - Naked Science Scrapbook
 
02:50
Why is a storm cloud flattened on top? In this episode of the Naked Science Scrapbook, we'll find out what causes cumulonimbus clouds to form characteristic anvil shapes...
Просмотров: 6399 NakedScientists
How does a plane stay in the air? - Naked Science Scrapbook
 
03:15
Being able to fly off on holiday is something we may take for granted. But how does the big metal tube you're flying in stay up in the air? We'll find out in the latest Naked Science Scrapbook. Plus we'll see that if the plane's engines stop working, you won't just plummet out of the sky...More videos and podcasts from http://www.thenakedscientists.com
Просмотров: 51904 NakedScientists
What is Jetlag? - Naked Science Scrapbook
 
06:01
Why do we feel tired or awake at the wrong times when we go on holiday to a different timezone? In this Naked Science Scrapbook we find out how your body clock works, how it is disrupted by long distance travel and if there's any way around getting jetlag.More videos and podcasts from http://www.thenakedscientists.com
Просмотров: 15906 NakedScientists
Why are copper compounds colourful? - Naked Science Scrapbook
 
04:01
Copper compounds can be blue, green, yellow, brown and black - so how does it produce so many different colours? We find out the answer to this, plus why copper's flame test is green...More videos and podcasts from http://www.thenakedscientists.com
Просмотров: 6015 NakedScientists
Why do onions make you cry? - Naked Science Scrapbook
 
03:37
Why do you start crying after you've chopped into an onion?
Просмотров: 11783 NakedScientists
Leaf Miners in Horse Chestnuts - Naked Scientists
 
02:20
Why are the Horse Chestnut trees looking under the weather? Why are they turning brown before the start of autumn?... It is all down to the larvae of a leaf miner moth which make their home inside the leaves of the horse chestnut.
Просмотров: 3730 NakedScientists
How does a jet engine work? - Naked Science Scrapbook
 
04:05
Humans have wanted to fly for thousands of years. Modern jet engines allow us to fly more efficiently, at greater speeds than ever before. In this Naked Science Scrapbook, we'll find out how engineers stop the engines from melting at such high temperatures, and why you couldn't run a plane on coal...More videos and podcasts from http://www.thenakedscientists.com
Просмотров: 12307 NakedScientists
Making Medicine - How Tablets are Made - Naked Engineering
 
04:12
We visit the tablet manufactuing site of Glaxosmithkline to see how millions of tablets are made each year with accurate precision for the global drug market...
Просмотров: 163180 NakedScientists
Naked Engineering - Separating Minerals
 
04:23
Professor Jan Cilliers explains the mineral separation process to see how bubbles and foam can be used to get the minerals you want on a large scale and how understanding more about this can increase profits by over �20 million a year as well as save a large amount of energy...
Просмотров: 22574 NakedScientists
Making Graphene - Naked Engineering
 
05:42
How to make the only recently discovered and high-tech material Graphene using sticky tape.
Просмотров: 3395 NakedScientists
Flying Toilet Rolls - Science from the Sporran
 
03:21
A sporting Dr Otherford inspects the qualified merits of a vigorous games technique known as 'backspin' in which a cardboard cylinder, that one hesitates to venture originated from a temple of convenience, is unbound from a rotary swathe of elastic and proceeds along the most remarkable of trajectories. For more podcasts, videos and experiments, go to http://www.thenakedscientists.com
Просмотров: 11602 NakedScientists
Powering Technology on the Nanoscale
 
04:50
Dr. Zhong Lin Wang explains how we could use nanofibres to harvest energy from our everyday movements to power nanoscale devices in the future...
Просмотров: 1958 NakedScientists
Making Chemicals on an Industrial Scale
 
04:28
David Compton from Industrial Chemicals Ltd explains the conditions, materials and equipment needed to make tonnes of a chemical for use in industry, on a daily basis with a focus on the washing powder component 'Zeolite'...
Просмотров: 7548 NakedScientists
Bistable Structures - Naked Engineering
 
07:43
We explore bistable structures and how they can be manipulated for engineering potential periscopes and protecting flexible electronics...
Просмотров: 6090 NakedScientists
Materialchef - Glistening Glass
 
04:01
This week we have a gander at the glorious and glistening material, glass. We cook up a scientific delicacy to explain where glass comes from, how it is made and what changing the temperature of the material does to this shatteringly-shiny and sumptuous substance... Guest: Stewart Hearne, http://www.stewarthearn.com Music: Dan-O, at http://danosongs.com
Просмотров: 1238 NakedScientists
PET Scans - Naked Engineering
 
05:35
We explore what a PET Scan is, how a PET scanner works and discover a way to make them clearer and more efficient by combining them with MRI...
Просмотров: 12366 NakedScientists
Materialchef - Peachy Pottery
 
04:53
In this instalment we look at a playful and plastic material, pottery. Smashing our way through this scientific delicacy we will explain where pottery comes from, how it works and how to get the best from a mouldable, malleable and creative medium... Guest: Katharina Klug, www.katharina.klug-art.com Music: Dan-O, at http://danosongs.com. Filming: Alex Parkyn-Smith. Copyright the Naked Scientists. Images courtesy of: William Carty and Hyojin Lee Kazuo Inamori School of Engineering at Alfred University, Alfred, NY
Просмотров: 1119 NakedScientists
Structural Health Monitoring
 
05:37
Elena Barton explains how a wide range of sensors using optics and sound waves can be engineered to monitor bridges and buildings to predict their damage and deterioration and maintain them to keep them lasting longer...
Просмотров: 12845 NakedScientists
Oily Invisibility Cloak - Science from the Sporran
 
02:55
Subsequent to a typical indulgence in his reveries, the daring nature of Dr Ernest Otherford's character compels him to re-enact one particular jaunt: that is to say, obscurity. Post-haste, the dexterous doctor fashions a circumstance of invisibility within a large Pyrex(R) basin by the witty employment of amber-coloured oil derived from vegetables. Find more experiments, videos and podcasts at http://www.thenakedscientists.com
Просмотров: 10917 NakedScientists
Electrostatic Levitation - Science from the Sporran
 
02:46
Following an excogitation upon the baroque quality of aqua vitae in the sober milieu of his withdrawing room, Dr Otherford relishes the gravity-defying nature of the most avant-garde materials known to civilisation: to wit "plastic" and "rubber." More videos and podcasts from http://www.thenakedscientists.com
Просмотров: 3355 NakedScientists
A Short History of the Jet Engine
 
03:13
We explore how the jet engine evolved to become such an efficient, powerful piece of technology, from the early designs of Frank Whittle to the turbo fan jets we see today...
Просмотров: 11680 NakedScientists
Discussing Dark Matter - OCR Physics Conference
 
05:27
In this video from OCR's Physics Conference - The Universe Stripped Bare, Andrew Pontzen explains how Dark Matter and Dark Energy make up most of our universe...
Просмотров: 555 NakedScientists
Toaster Hot Air Balloon - Science from the Sporran
 
03:47
In anticipation of explorative feats typically confined to the world of Jules Verne, Dr Otherford devises a dirigible that somewhat lacks a means of manoeuvrability. The esteemed Dr achieves this triumph through the utilisation of such extraordinary objects as a refuse receptacle sack, a segment of cardboard and a peculiar clock-regulated electrical bread heater. Find more experiments, videos and podcasts at http://www.thenakedscientists.com
Просмотров: 8362 NakedScientists
Vacuum Bazooka - Science from the Sporran
 
03:07
A most bellicose form of artillery is ingeniously mobilised by Dr Otherford subsequent to his precipitous detection of a locomotive aspirator from within the dark reliquary of his sporran.
Просмотров: 3250 NakedScientists