This last point is exceedingly important for, even with the most perfect suspension, it would be impossible to withdraw the heavy electromagnet from the eye quickly enough to prevent the iron ...

A coil with an iron core is called an electromagnet. The iron core increases the coil’s magnetic field strength. A simple electromagnet is made by coiling wire around an iron nail. An iron core ...

Earth’s core could contain helium from the early solar system. The noble gas tucks into gaps in iron crystals under high pressure and temperature.

The movement of atoms in the liquid outer core generate the Earth's magnetic field and the planet's broad habitability. But while the center of our planet has long been thought to be a solid iron ...

The current induced in the ring has an inductive phase shift relative to the induced EMF, and this phase-shifted current feels a Lorentz force from a radial magnetic field from the electromagnet's ...