Why is an inhomogeneous magnetic field needed in the Stern-Gerlach experiment? What would happen if a...

Why is an inhomogeneous magnetic field needed in the Stern-Gerlach experiment? What would happen if a uniform field was used?

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Expert Solution

In case of homogeneous magnetic field, the atoms (can be considered as tiny magnets) would have experienced only a turning moment, and no deflecting force. Hence, we could not obtain the deflected components inspite of the orientation of the atoms relative to the field and we can't see two up and down spin for which we have made Stern- Gerlach Experiment.

In case of inhomogeneous magnetic field, the atoms would have experienced not only a turning moment, but also deflecting force. Hence, we could obtain the deflected components. Hence, we use inhomogeneous field.

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genius_generous answered 1 year ago

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