› added 12 years ago

96

TIL telephone Area Codes in North America were assigned based on the length of time a rotary dial phone took to dial the area code, so larger cities have lower numbers.

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1BRD TIL that a decree promulgated on November 12, 1787, by Holy Roman Emperor Joseph II ordered all Jews in the Hapsburg Empire to acquire family names.
awaPN TIL That a female signal crayfish will lure her potential mates with her urine. Then, she makes them prove their mettle by beating her in a test of strengh before she allows them to mate with her.
vPvY4 TIL that William I's response to northern rebellion in England was to order the wholesale slaughter of the inhabitants of northern shires, and the burning of food, homes, crops, tools, and livestock so that survivors would freeze or starve
DQQYj TIL a 3-milligram dose of fentanyl (right in the picture) is enough to kill an average-sized adult male, for heroin it is 30 milligrams (left)
1ewO TIL one of mathematician John von Neumann’s lecturers said “Johnny was the only student I was ever afraid of. If in the course of a lecture I stated an unsolved problem, the chances were he’d come to me at the end of the lecture with the complete solution scribbled on a slip of paper.”