The SPS Observer
The magazine of the Society of Physics Students
Winter 2022
About the cover
Radford University physics major Kaleb Martin performs an experiment to measure the electron’s charge-to-mass ratio. The magnetic field generated by Helmholtz coils stabilizes an electron beam in a circular path for the measurement. Here Martin watches the electron beam as it is distorted from its circular path by a permanent magnet on the right, between the Helmholtz coils. Photo by Rhett Herman.
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