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Grossology
This Web site from the Carnegie Science Center in Pittsburgh accompanies a traveling exhibit, based on the book Grossology by Sylvia Branzei, that addresses many of the “slimy, oozy, crusty, stinky” questions that kids love to ask about the human body. Visitors can view scenes from the exhibit, listen to gross body sounds, try out […]
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19213
This article says that in cavitation, “bubbles form when falling pressure permits dissolved gases to pop out of solution.” A cavitation-vapor bubble is formed when the pressure drops below the vapor-liquid saturation pressure for the liquid. Dissolved gas bubbles will just give you a fizzy cola. A.J. McPhateBaton Rouge, La.
- Tech
Deadly Bubble Bath: Ultrasound fizz kills microbes under pressure
A modest pressure increase on a liquid agitated by ultrasound dramatically boosts the microbe-killing power of those high-frequency sound waves.
