Milliampere Meter made by Harold Silent in
Los Angeles 1917. He was 21 at the time he made this milliampere. |
Harold Charles Silent was born Sept 26, 1896. Born in Azusa from an old family of Glendora. He was educated at Cornell University and was a talented physicist who was doing secret work for the Air Force as a consultant for Hycon. He worked on voice operated switching devices on the first commercial trans-Atlantic telephone. He spent several years in Hollywood when the “talkies” were beginning and departed from Norway, where he had been assigned on a patent case, and departed just 30 hours before the Germans invaded the country in World War II. During the war, he worked on the staff of the National Defense Research Council at Duke University, improving artillery detection and range finding equipment by acoustical means. As a consultant to several branches of the Military, Mr. Silent traveled extensively including trips to Guam, the Arizona and Nevada deserts and many classified ocean voyages. Harold was 59 at the time of the crash. |
