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TIL jumper cables were invented in 1863 by a man named William Jumper. They were originally invented to restart batteries for mechanical devices, and have become an essential tool to have in most vehicles today.

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KYAbJ TIL: About Queen Radavalona I, "The Mad Monarch of Madagascar". She enforced isolationist policies, hunted down Christians, repelled the French, and made tax payments payable through forced labor. She eliminated her mom by starvation to not spill her own blood. The population dropped in half.
R7jyQ TIL that in south London in 1864, Thomas Webster Rammell built an atmospheric railway for passenger transportation, called Crystal Palace Pneumatic Railway, that went around 39.6 km/h (24.6 mph) through a 2.7x3m tunnel just by varying the air pressure in the tunnel before/behind the railway wagon.
e0Vrk TIL that a single Anonymous Sperm Donor has fathered 150 children, and inspired two movies.
LQNxQ TIL: In the Led Zeppelin song Kashmir, the guitar parts are in 3/4 time while the drums are in 4/4 time
69gYm TIL in an actual case of dying of laughter, 56-year-old Danish audiologist named Ole Bentzen laughed himself to death watching A Fish Called Wanda