› added 4 years ago

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TIL only less than 2% of the uranium in Little Boy, the bomb that was dropped onto Hiroshima, actually fissioned. This was still enough to kill 66,000 people and have a fatal blast radius of 1.3km.

Read more atomicheritage.org

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QJalX TIL Michael Jackson did not create the Moonwalk move but learned it from a dancer called Geoffrey, who had called it the Backslide. Michael Jackson renamed the move after he learned it from Geoffrey and it instantly became an iconic dance move.
R548j TIL of the antimony pill, aka the everlasting pill, used in the 18th and early 19th century for stomach relief. It was reusable after pooping it out, making it very cost effective. Entire families used the same pill, which some times went through multiple generations
OoEKL TIL that it's illegal to sleep outside on a refrigerator in Pennsylvania.
wLpOE TIL The Last Supper by Leonardo has a large missing section at the bottom of it where Jesus's feet would be. It was cut away in 1652 to make room for a door in the church where it was kept, after the paint faded away to the point of being unrecognizable.
Mer47 TIL one way the Romans measured time was through Saeculum - the period of time from the moment an event occurred (for example the founding of a city) until the point in time that all people who were alive to see it happen were dead.