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Magnetic Fields

An introduction to magnetic fields with various diagrams and links through to related sections.

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Hits: 1772


This page explains hysteresis in magnetic materials, and how it can be used for magnetic recording.

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Hits: 3188

Seeing Magnetic Fields in 3D

A simple demonstration enabling us to visualize magnetic fields in 3D.

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Hits: 1643

The Sun’s Magnetic Field Is About to Reverse

Every 11 years the direction of the Sun's magnetic field flips. This article outlines what we expect to observe and experience here on Earth when it does change direction.

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Hits: 910

Magneto mini golf

Play golf with a twist using protons in magnetic fields. Start with simple fields, then move all the way up to golfing in Earth’s magnetic field.

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Hits: 1882


Lenz's Law

When an emf is generated by a change in magnetic flux according to Faraday's Law, the polarity of the induced emf is such that it produces a current whose magnetic field opposes the change which ...

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Hits: 2143



Electric motors involve rotating coils of wire which are driven by the magnetic force exerted by a magnetic field on an electric current. They transform electrical energy into mechanical energy.

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Hits: 3589

Magnetism and the San Francisco Bay area

An exploration of the earth's magnetic field and the links between magnetic anomalies and the geology of the San Francisco Bay area.

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Hits: 1895



Electromagnets are usually in the form of iron core solenoids. The ferromagnetic property of the iron core causes the internal magnetic domains of the iron to line up with the smaller driving ...

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Hits: 1385

Earth's magnetic field

An article about the huge magnetic field that surrounds the Earth and stretches into space.

Visit Earth's magnetic field



Hits: 2986

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