Difference between revisions of "Ultrasonic"

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Ultrasonic ( or Ultrasound) is sound with a frequency greater than the upper limit of human hearing (greater than 20 kHz). (Wikipedia)
Ultrasonic (or Ultrasound) is sound with a frequency greater than the upper limit of human hearing (greater than 20 kHz). (Wikipedia)
[[Category:Ultrasonic]]
[[Category:Ultrasonic]]

Revision as of 14:22, 24 June 2011

Ultrasonic (or Ultrasound) is sound with a frequency greater than the upper limit of human hearing (greater than 20 kHz). (Wikipedia)