A magnetic field is invisible, but it can be detected using a magnetic compass. A compass contains a small bar magnet on a pivot so that it can rotate. The compass needle points in the direction ...

This magnetic field played a crucial role in drawing matter inward ... a weak magnetic field goes a long way,” Weiss notes. “It was predicted that it doesn’t need to be that strong out ...

Note that magnetic fields drop off rapidly with distance from a source. This application note says that based on the magnitude of commonly encountered external magnetic fields, the magnetic ...

A team of physicists at the University of Cambridge has unveiled a breakthrough in quantum sensing by demonstrating the use ...

Editor's note: This article has been changed to clarify the number of magnetic reversals observed in each Siberian rock sample, and the timing of one prolonged period without magnetic field reversals.

The Earth's magnetic field is essential to life as we know it. But it’s something we can never see – or hear, until now. In a recent study released on Oct. 10 by the European Space Agency ...