› added 5 years ago

195

TIL that binoculars are sufficient for stargazing

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l77p5 TIL that Complex Numbers aren't "complex"... you can see them as a simple way to do rotations around the Cartesian plane
OodbL TIL about Mexican Repatriation in the 1930s. Scapegoated for taking jobs away from "real" Americans during the Great Depression, state and local governments illegally forced hundreds of thousands of fellow citizens into forced exile simply for having Mexican ancestry.
xVpb1 TIL the Chinese anthem originated from a movie.
j6jXp TIL that Australia’s Mount Wingen has been burning for 6,000 years. A lightning strike or brush fire ignited a coal seam there around 4000 B.C., and it’s been smoldering ever since.
KYZVG TIL in 2019, a man died after getting trapped in the service corridors of a Sydney mall for three weeks. The mall has 10-14km (6-8 miles) of passageways and fire stairs.