Angular momentum is a fundamental quantity in physics that describes the rotational motion of objects. In quantum physics, it ...

An Invisible Force That’s Constantly in Motion Unlike the fixed geographic North Pole, magnetic north is shaped by the movement of molten iron in Earth’s outer core. This churning metallic flow ...

As of now, the Earth’s magnetic poles have not flipped, but they are slowly drifting. The process of the magnetic poles "flipping," also known as geomagnetic reversal, happens over thousands of years, ...

An attempt was made: mammals While birds harness the power of the Earth’s magnetic field to traverse vast migratory routes, other animals have a more, uh… prosaic uses for it.

This image shows magnetic declination, or the angle between magnetic and geographic north, according to the World Magnetic Model released in 2025. Red is magnetic north to the east of geographic north ...

While life on Earth has weathered multiple magnetic reversals over more than 100 million years, “we’ve never experienced a reversal when modern technology was present,” Brown said.

Lightweight C++ header-only library for calculating the magnetic field on earth given geocentric cartesian coordinates using the World Magnetic Model (WMM). Compatible with Arduino. The main function ...

In past research, the stars, the Sun and the Earth’s magnetic field have all been implicated as means by which birds find their way to faraway places. A recent study has shed new light on how birds ...

Migratory birds can extract positional information from magnetic inclination and magnetic declination alone. Proceedings of the Royal Society B: Biological Sciences, 2024; 291 (2034) DOI: 10.1098 ...

Many migratory birds use Earth’s magnetic field as a compass, but some can also use information from that field to determine more or less where they are on a mental map.

But magnetic north doesn’t line up perfectly with true north, the point where the Earth’s axis hits the surface (and above which the North Star sits). The difference between magnetic and true north, ...