Physics A-Level
Acoustic impedance mismatch
What Acoustic impedance mismatch means in Physics A-Level, as defined for OCR.
Definition of Acoustic impedance mismatch
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Reference: OCR
A difference between the acoustic impedances Z₁ and Z₂ of two media; a large mismatch gives strong reflection, and if Z₁ = Z₂ the numerator is zero so no reflection occurs.
Topics that use Acoustic impedance mismatch
- Using ultrasound (OCR A-Level)
Related terms
- A-scan
- Acoustic impedance
- Acoustic matching
- Angle dependence of Doppler shift
- B-scan
- Coupling gel
- Coupling gel in ultrasound scanning
- Density and speed of ultrasound
Using Acoustic impedance mismatch in the exam
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