Gain ratio: This is a way of measuring the distance that a bike travels with each turn of the pedals. A good first pedal bike should have a gain ratio between the low twos and high threes.

New research suggests the sun’s magnetic field originates 20,000 miles beneath the surface, much closer than the previously estimated 130,000 miles. This discovery could improve predictions of ...

The storms that create spectacular auroras such as those I witnessed originate from the sun’s dynamic magnetic field, an astrophysical enigma that scientists this week came closer to unraveling.

WASHINGTON, April 24 (Reuters) - Magnetars are among the universe's most extreme objects - a class of the compact stellar remnants called neutron stars that possess immensely strong magnetic fields.

Here's what you need to know about Apple's magnetic charging standard, along with the best ones you can buy. I’m one of PCMag’s mobile analysts. That means I check out phones, hotspots ...

Today, Earth’s magnetic field acts as a safety blanket, shielding the planet from dangerous solar wind. Without the protection of our magnetosphere, you, me and almost every other living thing ...

Transcranial Magnetic Stimulation (TMS) is a non-invasive procedure that delivers magnetic pulses to the brain to change neural activity. It is used to treat mental health disorders, particularly ...

Magnetic devices are components for creating, manipulating or detecting magnetic fields. This can include magnetic memories, magnetometers and devices for magneto-optics. Magnetism can also play a ...

The sun has a powerful magnetic field that creates sunspots on the star’s surface and unleashes solar storms such as the one that bathed much of the planet in beautiful auroras this month.

Researchers uncovered compelling evidence that Earth's magnetic field was in a highly unusual state when the macroscopic animals of the Ediacaran Period -- 635 to 541 million years ago ...

A fluid that retains its magnetic structure when an external magnetic field is removed can form the basis of liquid bioelectronics 1. A ferrofluid is a substance consisting of nanometre-sized ...