Friday, May 26, 2023

An interesting comparison

 

Red Side has produced a fascinating video comparison of the fastest man-made objects (so far).  It's quite entertaining.




I was amused by its reference to an ultra-high-speed manhole cover, launched during Operation Plumbbob in 1957.  It wasn't actually a manhole cover, but a 2,000 pound steel cover plate over a 500 foot borehole used for a nuclear test explosion.  It's presumed to have been vaporized during its passage through the Earth's atmosphere after the big bang.

Peter


7 comments:

  1. That's a good one, and yes, the manhole cover is hilarious!

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  2. That's a great post, but the manhole cover puts it over the top.

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  3. I like to think that, if extraterrestrials exist, somewhere two of them are peering around the edges of a perfectly circular hole through their space station, wondering what happened.

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  4. Interesting how many were created in the United States.

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  5. From memory the manhole cover can be see in a photo from the blast. Would be epic to be able to produce the photo (which now I can't remember if I saw it or not), but not today.

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  6. See the comments of the scientist who supervised the "manhole cover" test:

    https://nuclearweaponarchive.org/Usa/Tests/Brownlee.html

    I think he had a blast!

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  7. It was an okay video, I thought, but I didn't enjoy the reverse playback toward the end. That second helicopter they mentioned looks groovy.

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