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TIL - Most Dental drills are air-turbine powered and can reach speeds of 800,000 rpm

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Oopy7 TIL in 2017, a 10-minute song of silence entitled "A a a a a Very Good Song" became one of the top selling songs on iTunes because it helped solve the problem of car stereos playing the first song from an iPhone playlist in alphabetical order, giving people enough time to pick a song.
JQDv TIL Edgar Allan Poe’s famous poem “The Raven” was rejected by one magazine and was eventually sold for $9. The poem became immediately successful and reprinted in prominent periodicals without any financial gain to Poe.
wojwW TIL a day on Mercury (a full rotation) takes twice as long (176 Earth days) as a year. A full revolution around the sun occurs every 88 Earth days.
R748l TIL The IRS has a contingency plan in the event of nuclear war to continue collecting taxes
loxPV TIL in 1971 Pink Floyd played a show in London that was so loud it killed all the fish in a lake 100 yards away