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Clinton Davisson

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Covid-19
Nationality  United States
Known for  Electron diffraction
Role  Physicist
Children  Richard Davisson
Doctoral advisor  Owen Richardson
Name  Clinton Davisson
Fields  Physics
Clinton Davisson Clinton J Davisson Gyldendal Den Store Danske
Born  October 22, 1881 Bloomington, Illinois, USA (1881-10-22)
Institutions  Princeton University Carnegie Institute of Technology Bell Labs
Alma mater  University of Chicago (B.S., 1908) Princeton University (Ph.D, 1911)
Influenced  Joseph A. Becker William Shockley
Died  February 1, 1958, Charlottesville, Virginia, United States
Education  University of Chicago, Princeton University, Bloomington High School
Awards  Nobel Prize in Physics, Hughes Medal, Elliott Cresson Medal, Comstock Prize in Physics
Similar People  Lester Germer, George Paget Thomson, Owen Willans Richardson, William Shockley, Walter Houser Brattain

Clinton davisson


Clinton Joseph Davisson (October 22, 1881 – February 1, 1958), was an American physicist who won the 1937 Nobel Prize in Physics for his discovery of electron diffraction in the famous Davisson-Germer experiment. Davisson shared the Nobel Prize with George Paget Thomson, who independently discovered electron diffraction at about the same time as Davisson.

Contents

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Early years

Davisson was born in Bloomington, Illinois. He graduated from Bloomington High School in 1902, and entered the University of Chicago on scholarship. Upon the recommendation of Robert A. Millikan, in 1905 Davisson was hired by Princeton University as Instructor of Physics. He completed the requirements for his B.S. degree from Chicago in 1908, mainly by working in the summers. While teaching at Princeton, he did doctoral thesis research with Owen Richardson. He received his Ph.D. in physics from Princeton in 1911; in the same year he married Richardson's sister, Charlotte.

Career

Clinton Davisson Clinton Joseph Davisson 18811958 Smithsonian

Davisson was then appointed as an assistant professor at the Carnegie Institute of Technology. In 1917 he took a leave from the Carnegie Institute to do war-related research with the Engineering Department of the Western Electric Company (later Bell Telephone Laboratories). At the end of the war, Davisson accepted a permanent position at Western Electric after receiving assurances of his freedom there to do basic research. He had found that his teaching responsibilities at the Carnegie Institute largely precluded him from doing research. Davisson remained at Western Electric (and Bell Telephone) until his formal retirement in 1946. He then accepted a research professor appointment at the University of Virginia that continued until his second retirement in 1954.

Electron Diffraction and the Davisson-Germer Experiment

Diffraction is a characteristic effect when a wave is incident upon an aperture or a grating, and is closely associated with the meaning of wave motion itself. In the 19th Century, diffraction was well established for light and for ripples on the surfaces of fluids. In 1927, while working for Bell Labs, Davisson and Lester Germer performed an experiment showing that electrons were diffracted at the surface of a crystal of nickel. This celebrated Davisson-Germer experiment confirmed the de Broglie hypothesis that particles of matter have a wave-like nature, which is a central tenet of quantum mechanics. In particular, their observation of diffraction allowed the first measurement of a wavelength for electrons. The measured wavelength agreed well with de Broglie's equation , where is Planck's constant and is the electron's momentum.

Personal life

While doing his graduate work at Princeton, Davisson met his wife and life companion Charlotte Sara Richardson, who was visiting her brother, Professor Richardson. Richardson is the sister-in-law of Oswald Veblen, a prominent mathematician. Clinton and Charlotte Davisson (d.1984) had four children, including the American physicist Richard Davisson. The crater Davisson on the Moon is named after him.

Death and Legacy

Davisson passed away on Feb. 1, 1958, at the age of 76.

References

Clinton Davisson Wikipedia


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