摘要
从最基本的干涉理论出发,理论推导出空间干涉现象振幅和相位的分布的情况.得出干涉现象中振幅相等质元分布在以两相干波源为焦点的双曲线或两波源连线的中垂线上.同时发现,当两相干波源振幅相等时,其同相位的质元分布空间是以两相干波源为焦点的椭圆或两波源的连线上.最后分析得出两波源连线上的质元的振动振幅大小的分布关于连线中点对称,且相位相同的驻波现象.并给出包含了相干波波源初相以及两相干波源距离的具有普遍意义的驻波表达式.
Based on the most basic theory of interference,we have theoretical deduced the distribution of amplitude and phase of the spatial interference phenomenon.It presents that the equal interference amplitude distribute on the hyperbolic curves or the vertical line,which is focusing on or between the two coherent wave sources,respectively.When the coherent wave sources have the equal amplitude,the same interference phase locate on the elliptic curves or the connection line between the two sources.Lastly,we analyze that the interference phenomenon along the connection line shows the standing wave phenomenon.The vibration amplitude is symmetrical distributed by the midpoint,and the phase is equally along the line.The more general expression of standing wave has been proposed,including the parameters:the original phases of the two coherent wave sources and the distance between them.
作者
吴晓
杨帆
Wu Xiao;Yang Fan(College of Science and Technology,Zhejiang International Studies University,Hangzhou,Zhejiang 310012)
出处
《物理通报》
2018年第A02期43-46,共4页
Physics Bulletin
关键词
干涉
振幅和相位
驻波现象
interference
amplitude and phase
standing wave phenomenon
