College Physics
1st Edition
ISBN: 9781938168000
Author: Paul Peter Urone, Roger Hinrichs
Publisher: OpenStax College
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Textbook Question
Chapter 17, Problem 76PE
In the clinical use of ultrasound, transducers are always coupled to the skin by a thin layer at gel or oil, replacing the air that would otherwise exist between the transducer and the skin. (a) Using the values of acoustic impedance given in Table 17.5 calculate the intensity refiection coef?cient between transducer material and air. (b) Calculate the intensity refiection coefficient between transducer material and gel (assuming for this problem that its acoustic
impedance is identical to that of water). (c) Based on the results at your calculations, explain why the gel is used.
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Chapter 17 Solutions
College Physics
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