› added 9 months ago

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TIL there are proposed plans to expand the US telephone system because the number of available new 3-digit area codes is expected to be used up by around 2050.

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W7VvB TIL Anti-climb paint, a class of non-drying oil paint, was developed in the 1960s. It can take over 3 years to dry, It is used to prevent trespassing and mark trespassers as it is very difficult to remove.
v9Kj TIL The black diamonds on a tape measure, indicate the standard distance between wall studs.
R7DG8 TIL that a German football club was banned from playing for 12 months in 1934 for failing to give the Nazi salute at the start of a game.
VdgG TIL Nikola Tesla still has inventions classified by the US government.
N7DOJ TIL the oldest recipient of a doctorate degree was German born Ingeborg Syllm-Rapoport, who submitted her thesis in 1938 but wasn’t allowed to defend it under Nazi rule because her mother was Jewish. 77 years later she was finally given the chance to do so and obtained her PhD at the age of 102.