It is possible to make a material emit more radiation than it absorbs, violating the laws of physics in a way that could make ...

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

A research team led by Dr. Shen Jinhua from the Xinjiang Astronomical Observatory (XAO) of the Chinese Academy of Sciences has investigated rapid spatiotemporal vertical electric currents (VECs) ...

Did you know Earth's magnetic field is on the move? Recent studies reveal it's shifting at an astonishing rate—10 times ...

In wireless communication systems, very low frequency(VLF) and ultra-low frequency(ULF) waves have the advantage of strong penetrating ability, which are mainly used for underwater and underground ...

Forbes contributors publish independent expert analyses and insights. David Bressan is a geologist who covers curiosities about Earth.

Beneath the bogs of New Zealand’s Northland is a massive Ngāwhā kauri, living from 41,000 to 42,500 years ago, which gives an isolated, unbroken record of a period when Earth’s magnetic field declined ...

The transient field-frequency domain of magnetic dipole in a two-layered conducting Earth has been studied. It is obtained as a summation of waveguide modes plus contributions from branch cuts in the ...