› added 2 months ago

20

TIL Tesla produced a fully electric semi.

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Lk9Rv TIL that Schrödinger's cat paradox was originally intended to ridicule quantum superposition. Schrödinger was proven incorrect and his thought experiment is now used to explain superposition rather than criticise it.
7rNxZ TIL that Abraham Lincoln was clean shaven for almost his entire life. While running for President in 1860, an eleven-year-old girl wrote to him and said his face looked to thin and he needed to grow a beard. He took up her advice. After him, only two of the next eleven presidents lacked facial hair.
69XDY TIL that there are only 20 ancient lakes (defined as carrying water for more than a million years) in the world, with only 3 in North America (Tahoe, Tule, Pingualuk). Nearly all are tectonic (i.e. rift zones) in origin, however 2 are from meteorite craters (Pingualuk in Canada, Bosumtwi in Ghana)
X05AX TIL that the Gold Rush stimulated economies around the world. Farmers in Chile, Australia, and Hawaii found a huge new market for their food; British manufactured goods were in high demand; clothing and even prefabricated houses arrived from China.
rRde4 TIL the nazi Sieg Heil was ridiculed by some people. Since "heil" is also the imperative of the German verb "heilen" ("to heal"), a common joke in Nazi Germany was to reply with "Is he sick?", "Am I a doctor?", or "You heal him!"