Longitudinal Waves and Ultrasound

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Frequency - how many compressions/rarefrations in a second

Amplitude - distance between compressions and rarefractions

Ultrasound:

Sounds with frequency greater than 20,000 hz

Uses of ultrasound:

1. Body Scans - development of foetus

  • Ultrasound waves are beamed into the body from a special transmitter
  • These waves reflect from

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