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February 5, 2016
What is the fastest speed of any object on the earth?
As it happens, a very high speed film camera was recording the event and was expected to capture in slow motion the path and speed of any ejecta from the hole. Unfortunately, the camera, which had quite a wide view of top of the hole and and the area around and above, recorded the “manhole cover” on only one frame. There was no malfunction of the camera, it’s just that the “manhole cover” blasted out of sight so fast that the camera only saw it for one frame. Later calculations showed that the heretofore mundane four-foot metal disk had been launched at six times Earth’s escape velocity. That’s one hundred fifty thousand miles per hour. Talon Torres @ Quora
Posted by gerardvanderleun at February 5, 2016 12:34 PM. This is an entry on the sideblog of American Digest: Check it out.
Your Say
May 1976, Bad Tolz, Germany.
A 24" cast iron industrial grade pressure cooker lid with 8.8lbs of C4 on the backside was leaned slightly backwards against a 4' dia oak tree in the woods. Upon detonation the sound barrier was exceeded instantly, that oak tree was uprooted and tilting heavily, a 200'+ long ditch was carved in the earth, a giant pine tree was severed and a discarded VW was pierced all the way through from front to back. Though 100+ soldiers searched for several hours that lid was never found and my respect for manufactured demolitions expanded several fold.
A short while later a guy from ADM told me about the enhanced homemade stuff.
Posted by: ghostsniper ![[TypeKey Profile Page]](http://americandigest.org/sidelines/nav-commenters.gif)
at February 5, 2016 3:09 PM