1374375
Descrição
Mapa Mental por sarahmariebrowne, atualizado more than 1 year ago
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Criado por sarahmariebrowne
quase 10 anos atrás
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ULTRASOUNDS
- Sound = (mechanical) vibrations
- Humans hear sound between 20Hz - 20,000 Hz
- Any sound above 20,000 Hz = ULTRASOUND
- Humans hear sound between 20Hz - 20,000 Hz
- USES
- Pre-natal scanning
- Checking on baby development
- Checking for severe disabilities
- Checking on baby development
- Cleaning delicate machines
- The liquid particles vibrate at high frequencies which clean the dirt
- The liquid particles vibrate at high frequencies which clean the dirt
- Breaking down kidney stones into smaller pieces
- Pre-natal scanning
- When ultrasounds meet a boundary, they are partially reflected
- (pre-natal scanning) ultrasound waves reflect off baby tissue in womb and back into transducer, producing an image
- Time taken for reflected wave to reach transducer tells us how far away boundary is
- The results are processed to produce an image
- The results are processed to produce an image
- (pre-natal scanning) ultrasound waves reflect off baby tissue in womb and back into transducer, producing an image
- FORMULA ALERT
- S = V x T
- S = Distance
- V = Speed
- T = Time
- SOMETIMES DIVIDED BY TWO
- S = Distance
- S = V x T
- Non - ionising do not damage living cells
- Also produce accurate image of ultrasound
- Also produce accurate image of ultrasound
- ADVANTAGES
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