B What Happens in a Uniform Magnetic Field: The Stern-Gerlach Experiment

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Thread starter nirmali
Start date Nov 19, 2016
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Experiment Stern-gerlach

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In a uniform magnetic field, the Stern-Gerlach experiment would not result in the splitting of a particle beam. This is because the force acting on magnetic dipoles is dependent on the gradient of the magnetic field. Without a gradient, a uniform field exerts no net force on the dipoles. Mathematically, this can be expressed as the force being proportional to the field's gradient. Therefore, a uniform magnetic field fails to produce the observable effects seen in the experiment.

Nov 19, 2016

nirmali

What effect the magnetic field would have produced had it been uniform?

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Nov 19, 2016

ShayanJ

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The beam wouldn't split!

Nov 19, 2016

nirmali

But what if we were to answer it mathematically?

Nov 19, 2016

ShayanJ

Science Advisor

Insights Author

We would say the force on the dipoles is proportional to the gradient of the field and so a uniform field doesn't exert a force on the dipoles.

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