提供一款WEB网络电话源码，其中有丰富的文档，可以用于企业800电话嵌入网站、也可以直接集成到网站上，用来拨打WEB网络电话，有视频通话功能，带电话薄、已接或者未接电话显示功能等等。。。也可以配合你自己的VOIP平台使用。。。。此为客户端源码(含源码和演示程序)可以对接在目前流行的VOS、VPS 等多种软交换.-Provide a WEB network, with rich phone source document, and can be used for enterprise 800 ph

calculate the band of Fabry-Parot Filter -A Fabry-Parot Filter consist of the cavity formed by two highly reflective mirrors placed parallel to each other , as shown in the figure 1.The input light beam to the filter enters the first mirror at right

Frequency Analyzer: There is a white vertical line moving from left to right. It leaves behind a colorful trace. The colors correspond to the intensities of various components of the sound. For instance, if you whistle into the microphone a pure sine