› added 3 years ago

128

TIL: Some solid chemicals can absorb so much air moisture that they dissolve in it. This is called deliquescence.

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yQX5v TIL that when an explosion's shockwave travels slower than sound, it is considered a deflagration, not a detonation.
wLOvo TIL Wi-Fi can be used to see through walls.
8p94 TIL there was the Soviet equivalent to Eurovision called the Intervision Song Contest. Because of a lack of phones, viewers would turn lights on or off if they liked or didn’t like the song. According to load experienced on the electrical network, points were granted accordingly to each contestant.
JYe9v TIL that the carcasses used in Forged in Fire are donated to a wolf sanctuary (or, in the case of fish, taken home and eaten).
a8Evy TIL that the reason printers refuse to print without yellow ink is because they print a Machine Identification Code on every page, leaving a unique microscopic pattern of yellow dots that say what the serial number and model of the printer is, allowing the documents to be traced back to the owner.