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TIL the worlds smallest playable guitar is 10 microns long (about the size of a red blood cell). It has six strings each about 100 atoms wide and is played by aiming lasers at the strings. Its tone is about 130,000 times higher than a regular guitar supposedly the highest pitch ever recorded.

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rRO1x TIL that each year, the fountains of the U.S. Navy Memorial are salted with water from the Seven Seas in a ritual with ancient roots called "The Blessing of the Fleets." After the ceremony, attendants feast on traditional Navy Bean Soup.
PPPV TIL that while the American Government interned 110,000 people of Japanese decent living in America (including American citizens) the 442nd Infantry Regiment (composed of almost entirely of people of Japanese descent) became the most decorated infantry regiment in the history of the US Army.
8QaX TIL; That Roald Dahl the author of kid’s stories wrote the screenplay for the Bond movie “You only live twice”
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E1GWW TIL actor Jason Segel answered to "Dr. Dunk" in high school