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Get the swing of electromagnetic induction with this simple tutorial.

Like resistance, reactance slows an electrical current down. Explained by Lenz's Law, this phenomenon occurs only in AC circuits.

This tutorial is a three-dimensional simulation of a cathode ray oscilloscope producing Lissajous figures as it compares sinusoidal voltages.

Whenever current travels through a conductor, a magnetic field is generated.

A handful of iron filings helps visualize the invisible magnetic field that circulates around a wire with a current running through it.

You can create a stronger, more concentrated magnetic field by taking wire and forming it into a coil called a solenoid.

Magnetic shunts are often used to adjust the amount of flux in the magnetic circuits found in most electrical motors.

The mass spectrum of a material, deduced using a machine called a mass spectrometer, reveals how many isotopes of a given element are to be found in the material. See here what these spectra look like and how they are useful.

A pair of parallel wires serves to illustrate a principle that French scientist André-Marie Ampère was the first to comprehend, back in 1820.

No fancy movement in this tutorial, but these rules come in very handy when trying to understand some of what’s going on in our other tutorials.

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Magnet Academy is a free resource on magnetism & electricity brought to you by the Center for Integrating Research + Learning at the National High Magnetic Field Laboratory.