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  Magna Probe
Description:

A compass that is free to move in 3-dimensions.

Notes:

We own two of these; the other one is kept with the compasses in the non-Major's stockroom. Each one has a plastic case with instructions; please return the probe to its case when finished.

The 'needle' of this compass is suspended within a gimble, attached by fine needle bearings. This allows you to move the probe around all axes of a magnet (or current-carrying wire or coil) to visualize the B field. It is used by the instructor during the Lenz's Law (Phys104/152) and Magnetism (Phys104) experiments for demonstration.

Location:

LDL-D4.

Image: Note the handle label, indicating that the red end of the magna probe needle is north-seeking endMagna-Probe

 

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