00:00Did you know that sound can clean just about anything?
00:02And yeah, your bike chain will come out looking brand new after this magic bath.
00:07Meet the ultrasonic cleaner.
00:08But how does it work?
00:10The principle is pretty simple.
00:12You pour a cleaning solution or water into the tank,
00:15and ultrasonic waves are generated at the bottom at frequencies up to 50 kilohertzes.
00:20These waves create vacuum bubbles, which quickly collapse,
00:23producing powerful microscopic shock waves.
00:25That's called cavitation.
00:26And then the magic happens?
00:28Those micro-explosions easily remove grease, dust, and even grime
00:33stuck in the tiniest holes and hard-to-reach spots.
00:36The coolest part?
00:37The sound cleans without damaging the surface.
00:39And the water never gets hotter than about 160 degrees Fahrenheit.
00:44One golden rule.
00:45Never put pearls, emeralds, opals, or coral in there.
00:49The vibration can destroy them.
00:51But gold, silver, and surgical instruments come out perfect.
00:55So in the end, sound we can't even hear can clean everything from our hands to spacecraft parts.
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