1933 Arthur H. Compton, Nobel Laureate cosmic ray balloon flight to 17 miles (E

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United States

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Unused

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Condition: 1933 Arthur H. Compton, Nobel Laureate cosmic ray balloon flight to 17 miles

1933 Arthur H. Compton, Nobel Laureate cosmic ray balloon flight to 17 milesArthur Holly Compton (September 10, 1892 – March 15, 1962) was an American physicist who won the Nobel Prize in Physics in 1927 for his 1923 discovery of the Compton effect, which demonstrated the particle nature of electromagnetic radiation. It was a sensational discovery at the time: the wave nature of light had been well-demonstrated, but the idea that light had both wave and particle properties was not easily accepted. He is also known for his leadership over the Metallurgical Laboratory at the University of Chicago during the Manhattan Project, and served as chancellor of Washington University in St. Louis from 1945 to 1953. By the early 1930s, Compton had become interested in cosmic rays. At the time, their existence was known but their origin and nature remained speculative. Their presence could be detected using a spherical "bomb" containing compressed air or argon gas and measuring its electrical conductivity. Trips to Europe, India, Mexico, Peru and Australia gave Compton the opportunity to measure cosmic rays at different altitudes and latitudes. Along with other groups who made observations around the globe, they found that cosmic rays were 15% more intense at the poles than at the equator. Compton attributed this to the effect of cosmic rays being made up principally of charged particles, rather than photons as Robert Millikan had suggested, with the latitude effect being due to Earth's magnetic field. American Philatelic Society dealer member American Numismatic Association life member Note: Import duties, taxes, and charges are not included in the item price or shipping cost.These charges are the buyer's responsibility. Please check with your country's customs office to determine what these additional costs will be prior to bidding or buying. FREE scheduling, supersized images and templates. Get Vendio Sales Manager. FREE scheduling, supersized images and templates. Get Vendio Sales Manager.

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