On the surface of Earth all objects accelerate downwards at the same rate - at least, they're supposed to. But we all know dust, pieces of paper, and feathers fall slower. This is of course due to the influence of air resistance. In this experiment we use an evacuated cylinder to test whether a coin and feather really do accelerate at the same rate.
Other Veritasium videos
Tuesday, 3 January 2012
Monday, 2 January 2012
Julius Sumner Miller - Electrostatic and Magnetic Toys
Electrostatic toys, magnetic toys and miscellaneous toys.
Other physics demonstrations by Julius Sumner Miller
Other physics demonstrations by Julius Sumner Miller
Sunday, 1 January 2012
Reynolds Number - Sixty Symbols
Wind blowing over volcanoes, planes flying through air and Jupiter's Great Red Spot. A Reynolds Number plays a role in all of them.
Other Sixty Symbols videos
Other Sixty Symbols videos
Debate: Does the world need nuclear energy?
Nuclear power: the energy crisis has even die-hard environmentalists reconsidering it. In this first-ever TED debate, Stewart Brand and Mark Z. Jacobson square off over the pros and cons. A discussion that'll make you think -- and might even change your mind.
Other TED Talks
Other TED Talks
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