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The sound of a jet engine is about 1,000,000,000 times more powerful than the smallest audible sound.

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7rvVL TIL that in 1930 on the news bulletin the BBC reported that "There is no news" and instead played piano music
OGLOe TIL that the word "Sideburns" came from the American Civil War Union General, Ambrose Burnside's unusual facial hair. They were originally named "Burnsides", but this was later corrupted to the word "Sideburns" that we know today!
xVv5 TIL that a psychologist attempted to raise a chimpanzee named Lucy as a human being. One day, he walked into her room and was shocked to find her masturbating to a copy of Playgirl.
mxYVY TIL that after the War of 1812, America went through the "Era of Good Feelings". During this period America experienced national unity and had only one political party, the Democratic-Republicans.
XEKDX TIL while promoting Astro Boy during his visit to The United States in 1964. Osamu Tezuka was able to meet Walt Disney on opening day of the 1964 New York World's Fair. Tezuka and Walt briefly discussed about working on a movie together, but the plan quickly fell through after Walt's death in 1966.