ULTRASOUNDS

ULTRASOUNDS

Sound = (mechanical) vibrations
1. Humans hear sound between 20Hz - 20,000 Hz
2. Any sound above 20,000 Hz = ULTRASOUND
USES
1. Pre-natal scanning
  1. Checking on baby development
  2. Checking for severe disabilities
2. Cleaning delicate machines
  1. The liquid particles vibrate at high frequencies which clean the dirt
3. Breaking down kidney stones into smaller pieces
When ultrasounds meet a boundary, they are partially reflected
1. (pre-natal scanning) ultrasound waves reflect off baby tissue in womb and back into transducer, producing an image
2. Time taken for reflected wave to reach transducer tells us how far away boundary is
  1. The results are processed to produce an image
FORMULA ALERT
1. S = V x T
  1. S = Distance
  2. V = Speed
  3. T = Time
  4. SOMETIMES DIVIDED BY TWO
Non - ionising do not damage living cells
1. Also produce accurate image of ultrasound
ADVANTAGES

Zusammenfassung der Ressource

	Erstellt von sarahmariebrowne vor etwa 10 Jahre