巴克豪生效应[Barkhausen Effect] - 达人(其实～我是卧底，来自外星)

2005/11/19 | 巴克豪生效应[Barkhausen Effect]
类别(Ω〖物理〗) | 评论(0) | 阅读(99) | 发表于 12:59: A series of minute jumps in the magnetization of a ferromagnetic material as the magnetizing force is increased or decreased, discovered by H. Barkhausen in 1919. If a rod of ferromagnetic material is surrounded by a search coil which is connected to an audio amplifier and is then subjected to an increasing or decreasing magnetic field, a series of crackling sounds will be heard from a speaker connected to the amplifier.; 0