Oliver Cecil Simpson coauthored atomic-beam measurements using gravitational free fall to investigate the velocity distribution of cesium atoms. Gravity makes a particle's displacement depend on its travel time, so slower atoms are deflected more during a given path. For an ideal horizontal flight of length at speed , the downward displacement is . The measurement connects a beam's spatial distribution with its microscopic velocities, using gravity as a timing-dependent probe.[ref]
Physics and solid state science.[ref]
https://physicstoday.aip.org/obituaries/oliver-cecil-simpson. Independent professional profile
Portrait of Oliver Cecil Simpson
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