Originally posted by: Cuda1447
Pistol shrimp can create heat greater than the sun? WTF.
Probably just in a tiny clump of atoms.
A static spark is probably several thousand degrees, but the volume that's being heated is incredibly tiny.
But the result is a shock wave: it's high-frequency, so you hear a little "zap," but it's the same thing that lightning does. Lightning just sounds lower-pitched because of the larger size of the spark.
But those tiny vacuum bubble implosions can be incredibly energetic.
Cavitation pitting in hydraulic cylinders is an example of what happens when small bubbles implode - it's enough to cause accelerated erosion to a solid metal component.