【本文由小黑盒作者@Aliciacl于03月03日发布，未经许可不得转载！】 相信很多小伙伴对《恐鬼症》中的EMF测试仪很好奇，这玩意究竟是什么东西，为什么可以测出灵异事件等级，那么本期我就来为大家讲讲这个EMF仪器的来头。 一.EMF究竟为何物 ...

He suspected EMF interference so as a quick first step he decided to throw together an EMF detector using an Arduino. It uses a bank of LEDs as an indicator bar to reflect the EMF picked up by the ...

If you join one of the hundreds of ghost-hunting excursions offered around the country, you’re likely to encounter a slew of gadgets: EMF meters, REM pods, and spirit boxes galore. Do they do ...