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hyperphysics

Lorentz Force Law

Both the electric field and magnetic field can be defined from the Lorentz force law. The electric force is straightforward, being in the direction of the electric field if the charge q is positive, ...

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Ridiculously Sensitive Charge Detector

Using a Field Effect Transistor (FET) to detect external electric fields. A circuit is built and tested.

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hyperphysics

Cyclotron

The cyclotron was one of the earliest types of particle accelerators, and is still used as the first stage of some large multi-stage particle accelerators. It makes use of the magnetic force on a ...

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hyperphysics

Voltage

Voltage is electric potential energy per unit charge, measured in joules per coulomb ( = volts).

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Coulomb's Law

Like charges repel and unlike charges attract. Information on coulomb's law and links to related information.

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The Millikan Oil-Drop Experiment

PDF of Experimental notes for the Millikan electric charge experiment, as originally carried out in 1913.

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Retard Physlet

The Retard Physlet shows the time development of electric fields from an accelerating charge.

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Biot-Savart Law

The Biot-Savart Law relates magnetic fields to the currents which are their sources. In a similar manner, Coulomb's law relates electric fields to the point charges which are their sources.

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How electric guitar pickups work

HowStuffWorks article on electric guitars and how they use magnetic coils to translate sound into an electrical signal.

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Physics 1 - Electric Field

Interactive site calculating electric field strengths and drawing electric field diagrams in a variety of situations. a useful help to A-level and College studies

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