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Crossed Fields

Subtitled: "How do we know what we know about the electron?"

Quote of the Day

Potential Energy of a Dipole in a Field

Completion of previous class... Evaluation of work done in rotating a dipole away from its equilibrium position:

[mag-dipole energy]
[elec-dipole energy]

Discovery of the Electron in 1897

Thomson and the first measurement of q/m for the electron (cathode rays)
Velocity selector configuration of crossed electric and magnetic fields.

The Hall Effect


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Last updated Oct. 22, 1997.
Copyright George Watson, Univ. of Delaware, 1997.