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John Carlos Baez
johncarlosbaez
Condensed matter physics is so cool! You can make materials called "spin ices" that act like universes where the usual laws of quantum electrodynamics are modified! The speed of
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This doghouse was hit by a meteorite while a dog named Rocky was sleeping inside.But the interesting part is that the meteorite contained amino acids - the building blocks of
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Physicists measure spin in units of 1/2, but if you double these you get natural numbers. A particle of spin j and one of spin k can turn into one
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It's a dangerous mistake to assume Trump's goons in Portland - and soon more cities - are merely "putting on a show". He could be planning to create enough
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A Riemannian manifold is, roughly speaking, a space in which we can measure lengths and angles. The most symmetrical of these are called "symmetric spaces". In 2 dimensions
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