
It sounds like something out of a horror film, but this is a lovely experiment which makes a bright orange flame seem dark, and has lead to scientists finding out the composition of stars on the other side of the universe.
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Make stationery glide serenely across a tabletop, and find out how this relates to some of the largest aircraft ever built.
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This is a beautiful little demonstration dating back to to Lord Kelvin. Using a few cans wires and dripping water it is possible to generate thousands of volts in a beautifully elegant piece of physics.
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Bone is an incredible material - as for its weight, it can be stronger than steel. Find out why it is so strong with this kitchen science.
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Does a glass get heavier if you put your finger in the water? Find out in this experiment.
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This is a classic chemistry experiment dating back to the 19th century with impressive, loud and sometimes explosive results.
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Dr Hal brought along another classic chemistry experiment, the phosphorus moon, with rather beautiful results.
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Hydrogen is an extremely flammable gas, but what happens if you fill an egg with it, light the top and retire to a safe distance?
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What would happen if you put a light bulb in a bucket of liquid nitrogen? And would it still work if it were just a filament?
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Dr Hal showed us some things to do with dry ice; including the highly dangerous dry ice bomb.
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Scare all your friends by dropping a mug with seemingly nothing to stop it hitting the floor, and find out what this has to do with ice skating.
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Take some of those old bits of paper and recycle them to make some new paper. It is far more fun than buying recycled paper in a shop.
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How to stop an egg from breaking when dropped without any padding, and what it has to do with a womb.
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Confuse your eyes with this colourful experiment, and find out how it relates to seeing in the dark
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You may think that oranges seem are a fairly boring sort of fruit. Discover their more exciting side in this simple experiment.
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We have a look at the chemistry of batteries and what happens if you cool them down.
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Pigeons and various other birds seem to bob their heads backwards and forwards in a bizarre manner, which seems to be a lot of hard work. I was watching some in front of my garage and dug out the high speed camera to see what is going on.
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Find out how to make your own garishly coloured flowers, and how it relates to the way plants lift water to their leaves.
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What happens when you snap a simple piece of spaghetti? Believe it or not, this is a question that has baffled some of the finest minds in the world. Why not have a go yourself?
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Have a go at the Naked Scientists Bridge Challenge and see if you can do better than we did...
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Find out some of the science behind that tasty cinema snack! Why is it that you always find tiny popcorn at the bottom of your bowl?
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Find out how hard a vacuum cleaner can suck, what this has got to do with air pressure and discover how this helps us suck.
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Discover what happens when you make water fizzy, why it then tastes so tangy and why this could cause problems for shellfish.
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The wheel is something we have been taking for granted for the last 7000 years, but why is it so effective?
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Make a pump out of a straw and a skewer and soak all your friends.
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One thing you should never do to liquid nitrogen is to seal it in a pressure vessel.... so we had a go.
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If you have ever wanted to know how to make something on your computer screen disappear then find out here. Also find out why you should use polarised sunglasses and how an LCD monitor works.
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Have you ever wondered what would happen if you passed mains electricity through a gherkin? It is an illuminating experience.
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This is a really strange effect only discovered about 6 years ago. Basically it involves shaking cornflour mixture very hard and it starts to grow tendrils, in a very 1950's B-movie way.
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