磁强计
磁强计(英语:magnetometer)又称作磁力仪、高斯计,指的是各种用于测量磁场的仪器。
在国际单位制中描述磁场的物理量是磁感应强度,单位是特斯拉。由于1特斯拉意味着非常强的磁场,地球科学上常用纳特来作为测量单位,工程上常用的CGS制(厘米-克-秒制)中,单位则是高斯。在早期,电磁领域高斯单位盛行,因此磁强计也称为高斯计。
磁感应强度是矢量,具有大小和方向特征,只测量磁感应强度大小的磁强计称为标量磁强计,而能够测量特定方向磁场大小的磁强计称为矢量磁强计。
能够测量磁场的物理原理有很多,根据不同原理进行分类,常见标量磁强计原理有质子旋进磁强计,Overhauser磁强计,碱金属光泵磁强计等,常见的矢量磁强计有磁通门磁强计、磁阻磁强计等。
外部链接
维基共享资源上的相关多媒体资源:Magnetometer
- Earthquake forecasting techniques and more research on the study of electromagnetic fields (页面存档备份,存于互联网档案馆)
- Dan's Homegrown Proton Precession Magnetometer Page
- USGS Geomagnetism Program (页面存档备份,存于互联网档案馆)
- A home built PPM that actually works (页面存档备份,存于互联网档案馆)
- Earth's Field NMR (EFNMR)
- Magnetic archaeological prospection (Swedish National Heritage Board)
- Magnetometer – Measuring the magnetic field of Earth
- Example of a portable EMF meter (页面存档备份,存于互联网档案馆)
- Space-based magnetometers
- Practical guidelines for building a magnetometer by hobbyists – Part 1 Introduction (页面存档备份,存于互联网档案馆)
- Practical guidelines for building a magnetometer by hobbyists – Part 2 Building (页面存档备份,存于互联网档案馆)
- The new INTERMAGNET 1-second standard fluxgate magnetometer. V.Korepanov, A. Marusenkov (Lviv Centre of Institute for Space Research, Lviv, Ukraine), J.Rasson (Royal Meteorological Institute, Dourbes, Belgium)