24.3b Ultrasound Reflection and Acoustic Impedance | A2 Medical Ultrasound | CAIE A Level Physics
Автор: ETphysics
Загружено: 2021-03-08
Просмотров: 22581
Описание:
When waves reach a boundary, there is a transmitted and reflected portion!
00:00 Reflection and absorption
00:42 Wave reflection at medium boundary
02:20 Incident, transmitted, and reflected intensity
06:20 Ultrasound pulses instead of Continuous wave
08:28 Specific Acoustic Impedance of Media
12:34 Intensity reflection coefficient
19:06 Fraction of intensity reflected at BOUNDARY
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• Ch24 Medical Physics | CAIE 9702 A2 Physics
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• [ARCHIVED] A2 Waves: Ultrasound | CAIE 970...
Practice Past Year Questions
starred Q's are in example videos
ON10 P42 Q10 (pg3) Z and reflection coefficient*
MJ15 P42 Q10 (pg6) Explain use of gel
ON16 P42 Q5 (pg8) Explain transducer & Z values
MJ13 P42 Q10 (pg10) Advantage of high freq ultrasound
FM18 P42 Q5 (pg12) Explaining main principles & Z values
FM20 P42 Q4 (pg13) Gel & Z values
MJ20 P42 Q5 (pg14) Detection of ultrasound & Z explain
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