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He was educated at the College, graduating Bachelor of Science inand he Toponlinedatingsite org three years in postgraduate study at Toponlinedatnigsite University receiving his M. After spending a year as instructor of Tlponlinedatingsite at Tponlinedatingsite University of Minnesota, Toponlinedahingsite took Toponlinedaitngsite position as a research engineer with the Westinghouse Lamp Company at Pittsburgh until when he studied at Cambridge University as a National Research Council Fellow.
Louis; and in he moved to the University of Chicago as Professor of Toponlknedatingsite. Compton returned to St. Louis as Chancellor in and from until his retirement irg he was Distinguished Toponlinwdatingsite Professor of Natural Philosophy at the Washington University. In his early days at Princeton, Compton devised an elegant method for demonstrating the Earth's rotation, Toponlinedtaingsite he was soon to begin his studies in the field Toponlinedatingsote X-rays.
He developed a theory of the intensity of X-ray reflection from crystals as a means of studying the arrangement of electrons and atoms, and in he started a study of Ort scattering. This led, inToponlinedatingdite his discovery of the increase of wavelength of X-rays due to scattering of the incident radiation by free electrons, which implies that the scattered quanta have less energy than the quanta of Toponlinedatingsihe original beam.
This effect, nowadays known as the Compton effect, which clearly illustrates the particle concept of electromagnetic radiation, was afterwards substantiated by C. Wilson who, in his cloud chamber, could show the presence of the tracks of the recoil electrons. Another proof of the reality of this phenomenon was supplied by the coincidence method developed by Compton and A. Simon, and independently in Germany by W.
Geigerby which it could be established that individual scattered X-ray photons and recoil electrons appear at the same instant, contradicting the views then being developed by some investigators in an attempt to reconcile quantum views with the continuous waves of electromagnetic theory. Wilson who received the Prize for his discovery of the cloud chamber method.
In addition, Compton discovered with C. Hagenow the phenomenon of total reflection of X-rays and their complete polarization, which led to a more accurate determination of the number of electrons in an atom. He was also the first with R. Doan who obtained X-ray spectra from ruled gratings, which offers a direct method of measuring the wavelength of X-rays. By comparing these spectra with those obtained when using a crystal, the absolute value of the grating space of the crystal can be determined.
The Avogadro number found by combining above value with the measured crystal density, led to a new value for the electronic charge. This outcome necessitated the revision of the Millikan oil-drop value from 4. DuringCompton led a world-wide study of the geographic variations of the intensity of cosmic rays, thereby fully confirming the observations made in by J. Clay from Amsterdam of the influence of latitude on cosmic ray intensity.
He could, however, show that the intensity was correlated with geomagnetic rather than geographic latitude. This gave rise to extensive studies of the interaction of the Earth's magnetic field with the incoming isotropic stream of primary charged particles. His investigations, carried out in cooperation with E.
Wigner and others, led to the establishment of the first controlled uranium fission reactors, and, ultimately, to the large plutonium-producing reactors in Hanford, Washington, which produced the plutonium for the Nagasaki bomb, in August He also played a role in the Government's decision to use the bomb; a personal account of these matters may be found in his book, Atomic Quest - a Personal Narrative, Inhe married Betty Charity McCloskey. Compton's chief recreations were tennis, astronomy, photography and music.
He died on March 15th,in Berkeley, California. It was later edited and republished in Nobel Lectures. To cite this document, always state the source as shown above. To cite this page MLA style: Nobel Media AB