› added 7 months ago

19

TIL The CIA and Skunkworks figured out a way to cloak the SR71's massive engines from radar

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via reddit.com

j6y6j TIL Thomas Midgley Jr. had the most adverse impact on the atmosphere than any other single organism in Earth's history due to his invention of leaded gasoline and chlorofluorocarbons (two of the world's most harmful chemical compounds)
grrm4 TIL that not only is magnetic tape still used for data retention, it's relatively low cost, low error rate, and high capacity makes it extremely attractive for cloud storage.
Y7g7x TIL that Europe moves the clock forwards and backwards during the Summer just like the United States' Daylight Savings Time. It's called European Summer Time. However, the transition is a few weeks apart from when the United States moves their clocks.
vjQL TIL there’s a experimental project in Stockholm, Sweden where you can sign up to recieve a SMS if there is a cardiac arrest nearby (500 m), so you can get there before the ambulance and perform CPR. 9500 people have signed up, and they reach the location faster in 54% of the cases.
v1JA8 TIL that stripper poles spin in place, rather than the performer sliding around them.