› added 1 year ago

63

TIL most audio recordings contain a background "mains hum" from electric power grid oscillations that can be matched with grid readings to date the clip to the second it was recorded.

Read more robertheaton.com

via reddit.com

j7wN TIL California City is the 3rd biggest city in California by area. Its founder planned a city to rival Los Angeles, but today only 14000 people live there.
691BX TIL the USMC once used a modified version of DOOM to do simulation trainings
rZwy TIL dogs can smell their owners from 11 miles away
ADMga TIL Nintendo created a video game based on the Popeye comic strip, but could not acquire licensing rights for the characters. Rather than scrap the work that was done, it released with a new cast - a plumber, his girlfriend, and a gorilla - and was renamed "Donkey Kong" after the game's antagonist.
1Djd TIL scientists believed that during the Inflationary Epoch, roughly 10^-36 seconds after the Big Bang, the universe expanded by a factor of at least 10^26 — 100,000,000,000,000,000,000,000,000, becoming the size of a grapefruit.