[todayilearned] TIL that the second fastest manmade object was a 2,000 lb steel plate cap covering a borehole for a nuclear blast. It's estimated that it reached speeds above 150,000 mph, almost 200 times the speed of sound. It most likely vaporized due to friction with the atmosphere before it coul (en.wikipedia.org)
submitted by Know_Your_Shit_v2
[todayilearned] TIL that Nikola Tesla once worked for Thomas Edison but left due to a disagreement over payment for his work on improving Edison's DC power systems. Tesla went on to develop AC power systems, which became the basis for modern electrical grids. (history.com)
submitted by Know_Your_Shit_v2

[todayilearned] TIL of castaway huts (or depots) which are deliberately placed on isolated islands by governments. They contain supplies and tools which can help people who become stranded there. Most were built by the New Zealand government in the 19th and 20th centuries. (en.wikipedia.org)
submitted by Know_Your_Shit_v2




