"When an object travels at a speed greater than Mach 5, it is said to move at hypersonic speed."Editor's Note: "Mach is a unit of speed measurement for an object moving through a medium, equal to the speed of sound in the same medium--760 mi/hr at sea level."
Issue: The Flash #124 (November 1961)
2 comments:
Good timing. The USAF just tested this last week a prototype scram jet that had sustained speeds of Mach 6.
Cheers!
Steven G. Willis
XOWComics.com
Well that was a bit serendipitous. I love to use Flash Facts to build upon recent scientific achievements or discoveries, but I have to say that this particular alignment happened entirely by accident! Thanks for mentioning it.
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