This means that the strength of the electromagnet increases with increasing current, which agrees with our prediction. In fact, since the line of best fit is a straight line through the origin ...

By controlling the amount of current, we can make electromagnets of any strength we want. We can even reverse the magnet’s polarity by reversing the direction of the current. Given the connection ...

This article was originally published with the title “ Powerful Electromagnet for the Use of Oculists ” in Scientific American Magazine Vol. 105 No. 26 (December 1911), p. 573 doi:10.1038 ...

The strength of its magnetic field depends on the electric current and the number of loops the wire makes around the core. It's possible to make an electromagnet without the iron core, but it won ...

Invented in 1824 by the British physicist William Sturgeon, electromagnets are a fixture of modern life, appearing in loudspeakers, motors, MRI machines, maglev trains, and particle accelerators.

A hybrid electromagnet in China produced the strongest steady magnetic field ever recorded at 45.22 Tesla. ... recorded a field strength of 45.22 Tesla (T) on August 12 from its high-powered ...

As electromagnets are temporary, they could be used to increase the strength of a magnetic connection for a short period of time, such as if an iPad detects the cover may be accidentally separated ...