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Is time travel possible?

A video looking at the physics behind time travel.

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Hits: 380

Einstein Inspires Dr. Mallett's Dream of Time Travel

A great video explaining Einstein's theory of relativity and how it alter how time runs.

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Hits: 877

Space-time for beginners

A quick guide to help you get to grips with Einstein’s concept of gravity and space-time.

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Hits: 389

What does sound look like?

See sound waves travel through the air using a clever photographic trick called Schlieren photography.

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Hits: 280

The structure of Earth

Find out how we know the structure of the Earth from the way Earthquakes travel round the world.

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Hits: 17

Nikola Tesla vs Thomas Edison. Epic Rap Battles of History Season 2.

A fun video explains the rivalry between two great scientists of their time, Tesla and Edison, in rap.

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Hits: 1652

Helium balloons don't float all the time

Helium balloons float because of the air around them. Remove the air and the balloon sinks. Watch it happen in this video.

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Hits: 493

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