• Als Spam markieren
• Beitrag melden

• 
  Diese Gruppe Alles

• Archiv
• RSS-Feeds

• Kontakt
• Hilfe
• Impressum
• Datenschutz

Lightning inside cavitation bubble

Hi Henry,
Ran across this while surfing,
"When an ultrasonic wave passes through a liquid medium, containing
microscopic gas inclusion, it can produce cavitation. At the boundary of
a cavitating zone, a voltage appears as a effect of the collapse/rebound
cycle of the cavitation bubbles."

The voltage causes a spark in the vapor of the bubble.
One man's conclusion is that sonoluminescence is caused by the spark.

"In (cavitation) bubbles is vapour. It is like (a) small cloud. Big clouds
big lightning,
small clouds small lightning"
David A. Smith

This is a pdf that describes measuring voltage in liquid under ultrasound.
http://th-www.if.uj.edu.pl/acta/vol37/pdf/v37p2919.pdf

The voltages are low, but the bubbles are small.
Just thought I'd pass it along.
Mike

Antworten