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TIL Wired telegraph sounders didn't emit beeps. Instead, the signal was fed to an electromagnet which caused a spring-loaded lever to emit clicks for "on" and "off"

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b6v04 TIL that since 2002, the American National Archives stores important national documents such as the Declaration of Independence and the Constitution within argon-filled cases to inhibit their degradation.
v1d4x TIL that the oldest continuously operating Chinese restaurant in the US is not in New York or San Francisco, but Butte, Montana. Pekin Noodle Parlor opened in 1911 and is still open today.
GYKD5 TIL that the Battle of Mogadishu (1993) is known as the Day of the Rangers in Somalian
Zk0B TIL Jackie Chan never really liked the Rush Hour Series but continued starring due to an “irresistible” amount of money.
Zbbv TIL that Carrie Fisher regularly got high on cocaine on set of The Empire Strikes Back, it got so bad that even John Belushi told her she had a problem.