Lorentz Force Helmholtz Coil Demonstrator


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Product Overview

This device demonstrates Lorentz force exerted by a magnetic field on moving electrons and the deflection of moving electrons within an electric field. The charge-to-mass ratio of the electron (e/m) can be determined. In order to measure e/m, the electron beam is accelerated at a known voltage and deflected into a circular path by a known coil current. Using a detachable scale that fits in front of the tube, the circle's diameter can be measured, giving enough data to calculate e/m. This device comes complete in a woodgrain finish dark box. Instruction manual is included. Visit WIKIPEDIA for more information on Lorentz force.

Need a manual? Click this Product Instructions link for a product guide.

Overseas customer? We now offer this device with 220V AC European Voltage. Click here for more information.

*At this time, we are limiting purchase of this item only to educational institutions.

**This large/oversize device is subject to an additional packaging/transport fee of $25 (listed under setup charge), which covers additional transportation/packaging/insurance requirements for this very large and very delicate instrument.

Power Supply: 110V AC / 60Hz Acceleration Voltage: 0-250V Magnetizing Current: 0-2.5A Current Direction: Clockwise/Off/Counterclockwise Deflection Plate Voltage: 0-250V

Dimensions (lxwxh): 14in. x 12in. x 18in. / 350mm x 300mm x 450mm Weight: 32 lbs.


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  • 5
    Purchasing Lorentz Force Distributor

    Posted by Rhonda Watts on Sep 8th 2014

    I would love to thank Chris for helping me to purchase these items. Chris was helpful above and beyond the line of duty and smoothed out any difficulties we had. Thanks again Chris for your hard work

  • 5
    Lorentz Force Demonstrator

    Posted by Fabio Sau on Aug 21st 2014

    My brand new Lorentz Force Demonstrator has been shipped to Italy a blink of an eye. It works perfectly. Thank You! Sci-Supply Rocks! :)