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| Don't just hear the boom...see the boom! |
We do not get to hear Sonic Booms much (it's a zoning thing - brings down house values). But, if you go to an air show, or join the military, you might get to see things like this: Sonic Boom
Where do we get the word "Mach" (as in "Mach 1")? It's a nod to Ernst Mach. Look him up.
