When a strong enough magnetic field is present, ... In the same way, the “Magnetic Wave Tester” seems to only respond to EMF that’s high enough to be a concern.

So it is with today’s subject, a Mustool MT525 electromagnetic radiation tester. At a cost not far above £10 ... More pricey magnetic field sensors seem to at least have a ferrite rod.

The equipment is based on Hprobe’ s unique 3D magnetic field generator technology for single and multi-site testing at wafer-level, under magnetic field.

It's still mysterious how Earth's liquid center produces its magnetic field. But one scientist hopes to find clues by building a 26-ton spinning model of the planet.

The magnetic shifts can affect navigation systems used by airplanes, ships and even your mobile phone. A technology competition to devise a new means of more accurately measuring Earth's magnetic ...

As the earth's magnetic field switches polarity, it's strength is expected to drastically reduce, possibly to near zero for a time, until the new poles begin to form. Philip Argy January 10, 2021 ...