A magnetometer is a device that measures magnetism: the direction, strength, or relative change of a magnetic field at a ...

Discover how to build a magnetic repulsion motor capable of lighting LED bulbs using only magnets and basic components. This step-by-step tutorial covers the construction of the magnetic base, the ...

Our planet's invisible shield is changing in ways that scientists are only beginning to understand. Over the past two hundred years, Earth's magnetic field has weakened by around nine percent on a ...