振动合成在气垫导轨上的验证  

Verification of Vibration Synthesis on Air Cushion Guide

作　　者：张萍 刘海山 段绍冰 程水云 许剑[1] ZHANG Ping;LIU Hai-shan;DUAN Shao-bing;CHENG Shui-yun;XU Jian(College of Electronics and Information Engineering，Guangdong Ocean University，Zhanjiang，Guangdong 524088，China)

机构地区：[1]广东海洋大学,广东湛江524088

出　　处：《大学物理实验》2017年第6期81-85,共5页Physical Experiment of College

基　　金：2016年国家自然科学基金(11647109)

摘　　要：晶格中原子的集体振动——声子与晶格的热力学性质密切相关。它是凝聚态物理中的重要内容并具有广泛的应用。由于介绍量子化的声子需要较多的基础知识,目前很少在本科教学中展示该内容。本文从经典物理的角度出发,通过气垫导轨实验来演示滑块的集体振荡,验证了任一种振动均是由基振动线性叠加而成,这一实验在本科教学中可帮助学生理解"合成、叠加、耦合"等现代物理学概念。The collective oscillation in aperiodic lattice called phonon is responding to the thermodynamic property of lattices.It is an important part in condensed matter physics,which has a broad application.But it is rarely showed in the undergraduate education because teaching quantum phonon need much foundation knowledge.In this paper,starting from classic physics,we demonstrate the collective oscillation of the sliding block in the experiments on air cushion guide,which concluded that any kind of vibration is superim posed by some simple harmonic vibrations with different frequency.Thus this experiment can help students to understand the modern physical concept of“synthesis,superstition and coupling”in the undergraduate education.

关 键 词：声子 集体振荡 气垫导轨 MATLAB处理 振动合成 

分 类 号：O4-34[理学—物理]