John D. Kraus
| John D. Kraus | |
|---|---|
| Born |
June 28, 1910 Ann Arbor, Michigan, U.S. |
| Died | July 18, 2004 (aged 94) Liberty Township, Delaware County, Ohio, U.S. |
| Residence | United States |
| Nationality | American |
| Fields | Physics |
| Institutions |
Ohio State University Harvard University University of Michigan |
| Alma mater | University of Michigan |
| Notable awards | IEEE Edison Medal (1985) |
John Daniel Kraus (June 28, 1910 – July 18, 2004) was an American physicist known for his contributions to electromagnetics, radio astronomy, and antenna theory. His inventions included the helical antenna, the corner reflector, and several other types of antennas. He designed the Big Ear radio telescope at Ohio State University, which was constructed mostly by a team of OSU students and was used to carry out the Ohio Sky Survey. Kraus held a number of patents and published widely.
Kraus was born in 1910 in Ann Arbor, Michigan. He received his Ph.D. in physics from the University of Michigan in 1933. In addition to his professional achievements, he also contributed greatly to amateur (ham) radio and held FCC call sign W8JK.
Following the completion of his doctorate, Kraus was a member of the research team in nuclear physics at the University of Michigan, helping to design and build the school's new 100-ton cyclotron. During World War II he worked on degaussing ships for the United States Navy and on radar countermeasures at Harvard University.
After the war, Kraus joined Ohio State University, later becoming the director of the Radio Observatory and McDougal Professor (Emeritus) of Electrical Engineering and Astronomy. He supervised the Ohio Sky Survey which cataloged over 19,000 radio sources, more than half previously unknown, and later participated in the SETI survey conducted by Bob Dixon
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