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TIL That before semiconductor diodes and such were invented, mercury arc valves were used

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RBP9 TIL Houdini was friends with Sir Arthur Conan Doyle until his debunkings lead Doyle to believe Houdini was a medium using his power to block other psychics.
mxxap TIL In 1942, a miner blew his nose so hard that his eye fell out
W7ogY TIL the terms “Refrigerator” and “Icebox” were used interchangeably as far back as 1848 even though the appliance we call a refrigerator (home use/mechanically cooled) wasn’t introduced until 1913.
awoVJ TIL a bunch of friends and family tried to help Steve-O overcome his drug addiction and failed. One time he got so high on Nitrous Oxide that he hallucinated a formal intervention to help him out.
XErm8 TIL about Sergey Prokudin-Gorsky a Russian photographer who traveled the Russian Empire from around 1909 to 1915, and would take 3 individual black-and-white photos, each with a filter (red, blue, and green) to create high-quality pictures in full color way before full color images were available.