浅析声波垂直入射时反射和透射现象的医学应用

The Medical Application of Reflection and Transmission Phenomena of Sound Waves When Vertically Incident

《医用物理学》是医学类院校的一门公共基础课程。目前各医学类院校所选用教材中均包括声波及其医学应用的教学内容,但绝大多数教材中关于声波在两种介质表面的反射、透射现象的描述缺少必要的过程性推导,而是直接给出了结论[1-4],导致大多数学生在学习这部分知识内容时理解困难,进而影响知识内容的理解与掌握。本文针对这一情况,以平面简谐波为例,对声波垂直入射到两种介质表面时的规律进行了分析讨论。

Medical Physics is a public basic course in medical colleges.The course focuses on the physics methods of basic medical and clinical research and application,and is based on new technologies and knowledge,laying the necessary physics foundation for medical students'subsequent course learning and future career in healthcare.At present,the teaching materials selected by various medical colleges and universities all include the teaching content of sound waves and their medical applications.However,the vast majority of textbooks lack necessary procedural derivation for the description of the reflection and transmission phenomena of sound waves on the surfaces of two media,and instead directly provide conclusions,which leads to difficulties for most students to understand and master this knowledge content,thereby affecting the understanding and mastery of the knowledge content.This article takes a plane harmonic wave as an example to analyze and discuss the law of sound waves vertically incident on the surfaces of two media in response to this situation.