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Old 06-16-2018, 09:00 PM
Iamnuts Iamnuts is offline
Join Date: Jan 2013
Posts: 302

The new sensor, developed by NIST physicist John Kitching, consists of a laser, a cell containing vaporized metal atoms, and a light detector. When the metal atoms are illuminated by the laser, they align such that they donít absorb any of the light. The presence of even a very weak magnetic field, however, disrupts their alignment, and they absorb some of the light. This change is recorded by the detector.
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