› added 7 years ago

78

TIL that HAZMAT is short for Hazardous Materials

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via reddit.com

6EYDl TIL about the Kearny fallout meter, designed such that someone with a normal mechanical ability would be able to construct it before or during a nuclear attack, using common household items
7BLZ TIL string instruments often have a “wolf tone” where the resonance of a certain note creates a conflict between the vibrating string and and the body of the instrument.
4XElw TIL that some hotel towels have RFID microchips sewn into them to know if you stole them
koRg TIL In 1861 a slave took over on a confederate ship and delivered it to the Union. He later was given the ship to command during the Civil War. After the war he bought the house he was a slave in, and became a US congressman.
X0LEr TIL that shrapnel is named after Lieutenant-General Henry Shrapnel who was a British artillery officer who invented the shrapnel artillery shell.