What type of details about emory leon chaffee can be gathered from the following bio? Bio: emory leon chaffee -lrb- april 15 , 1885 -- march 8 , 1975 -rrb- was an american physicist and a former professor at harvard university from 1911 to 1953 . chaffee was born in somerville , massachusetts . he studied electrical engineering and received his bachelor 's degree from mit in 1907 . afterward he made further studies at the harvard university and took his master 's degree and his ph.d. . he was made an instructor in electrical engineering in 1911 and got a position as assistant professor of physics in 1917 . in 1923 he became an associate professor and a professor in 1926 . he was appointed rumford professor of physics in 1940 , and gordon mckay professor of applied physics in 1946 . chaffee became chairman of the department of engineering sciences and applied physics from 1949 till 1952 . chaffee was awarded the ieee medal of honor in 1959 . he was best known for his work on thermionic vacuum tubes . in 1911 he invented the concept of the chaffee gap which was a way of producing continuous oscillations for long-distance telephone transmissions and in 1924 he started to work on controlling weather , using aircraft to break up clouds with electrically charged grains of sands . chaffee died in waltham , massachusetts .
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