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The first liquefaction of helium in 1908 by Dutch experimental physicist Heike Kamerlingh Onnes was revolutionary. For the first time, scientists could push the boundaries of extremely low temperatures and see what happens to materials. 3 years after that feat, Onnes wanted to test something new: what happens to a metals electrical resistance as you reach those critical temperatures? 3 theories existed before Onnes tackled the problem, one by Lord Kelvin, one by James Dewar, and one by Augustus Matthiessen. However, when it came time to experiment, he collected data that matched none of the 3 existing theories. His discovery shocked the world of physics and introduced an entirely new concept to the community.
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BU PODCAST'IN DİĞER BÖLÜMLERİ
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The weights of atoms and molecules are quite precise today, but has quite a long and complicated history. This video dives into the very beginning of that history, right when modern atomic theory was beginning to surface. John Dalton is the inventor of relative atomic weight, and his ideas were ins…
For over two centuries, Newton’s law of gravity accurately predicted the motions of all the planets in the solar system. But that all changed in 1859, when French astronomer Urbain Le Verrier discovered a strange anomaly regarding mercury’s orbit. This led to a problem in Newton's reality that didn…
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