Simon Foner developed a sensitive vibrating-sample magnetometer. A magnetized specimen oscillates relative to pickup coils, producing a periodic change of magnetic flux and hence an induced voltage. Calibration converts that signal into a magnetic moment. Moving the specimen makes its contribution oscillatory, allowing it to be separated from many static background fields. The apparatus turns the geometry and frequency of mechanical motion into a reproducible magnetic measurement.[ref]
Versatile and Sensitive Vibrating-Sample Magnetometer by Simon Foner. Review of Scientific Instruments 30 (1959), sample vibration, pickup coils and calibration
Portrait of Simon Foner
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