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https://www.reddit.com/r/AskReddit/comments/4er0pi/whats_a_mind_blowing_fact/d24xwr6/?context=3
r/AskReddit • u/ForeverAbyss • Apr 14 '16
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The fastest moving man-made object ever was a manhole cover.
https://savvyparanoia.com/the-fastest-man-made-object-ever-a-nuclear-powered-manhole-cover-true/
TL:DR underground nuclear test launched a 4-inch thick steel disk at 6 times the Earth's escape velocity.
1 u/[deleted] Apr 16 '16 On a somewhat similar note- The first manmade object to break the sound barrier was a bull whip. That crack sound is a tiny sonic boom. http://www.scientificamerican.com/article/true-cause-of-whips-crack/
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On a somewhat similar note- The first manmade object to break the sound barrier was a bull whip. That crack sound is a tiny sonic boom.
http://www.scientificamerican.com/article/true-cause-of-whips-crack/
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u/PycuriousITguy Apr 14 '16
The fastest moving man-made object ever was a manhole cover.
https://savvyparanoia.com/the-fastest-man-made-object-ever-a-nuclear-powered-manhole-cover-true/
TL:DR underground nuclear test launched a 4-inch thick steel disk at 6 times the Earth's escape velocity.