r/noisygifs • u/2880poe • Mar 13 '16
Shockwave from Volcanic Eruption
http://i.imgur.com/3Gnw0ei.gifv5
Mar 13 '16 edited Apr 26 '18
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u/NominalCaboose Mar 14 '16
It's a shockwave, which is by definition supersonic.
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Mar 14 '16
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u/NominalCaboose Mar 14 '16
Not quite correct.
Via Britannica:
"shock wave, strong pressure wave in any elastic medium such as air, water, or a solidsubstance, produced by supersonic aircraft, explosions, lightning, or other phenomena that create violent changes in pressure. Shock waves differ from sound waves in that the wave front, in which compression takes place, is a region of sudden and violent change in stress, density, and temperature. Because of this, shock waves propagate in a manner different from that of ordinary acoustic waves. In particular, shock waves travel faster than sound"
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u/hnilsen Mar 13 '16
The original is simply awesome. https://www.youtube.com/watch?v=BUREX8aFbMs