Longitudinal Waves (P4)

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  • Created by: caits
  • Created on: 11-04-14 14:14

(http://www.antonine-education.co.uk/Image_library/Physics_2/Waves/Wave_properties/wav_9.gif)

Frequency - how many compressions/rarefractions in 1 second

Amplitude - distance between compresseion and rarefraction

Ultrasound:

  • Sounds with frequency greater than 20,000 Hz

Uses of Ultrasound:

  • Body scan - development of the foetus

Ultrasound waves are beamed into the body from a special transmitter. These waves reflect from different layers inside the body returning to the reciever at different times. A computer processes this information…

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