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Semen BraudeSoviet and Ukrainian radiophysicist and radio astronomer.
Date of Birth: 28.01.1911
Country:  Ukraine |
Content:
- Early Life and Education
- Career in Radiophysics
- Contributions to Radio Astronomy
- Groundbreaking Discoveries
- Theoretical Advancements
- Contributions to Radio Oceanography
- Technological Innovations
Early Life and Education
Born in Poltava, Ukraine, Semen Yakovlevich Braude graduated from the Kharkiv Institute of Physics and Mathematics in 1932.
Career in Radiophysics
From 1933 to 1955, Braude worked at the Ukrainian Physical-Technical Institute. He played a crucial role in establishing the Institute of Radiophysics and Electronics (IRE) of the Ukrainian Academy of Sciences (UAS), where he became deputy director for scientific affairs from 1955 to 1980.
Contributions to Radio Astronomy
As a pioneer in Soviet radio astronomy, Braude organized the first radio astronomy observatory in Ukraine. Under his guidance, innovative radio telescopes with electrically controlled beams were developed, enabling extensive research on celestial radio emissions.
Groundbreaking Discoveries
Using the unique UTR-2 radio telescope and the "URAN" radio interferometer, Braude's team made groundbreaking discoveries. They detected low-frequency pulsar radio emissions, measured extended radio sources, studied cosmic background radiation, and investigated decameter emissions from Solar System bodies.
Theoretical Advancements
In addition to his experimental work, Braude conducted theoretical research on cosmic radio radiation. He investigated the effects of joint synchrotron and thermal radiation, absorption in ionized gas, and synchrotron emission in objects of high optical density.
Contributions to Radio Oceanography
Braude's research on radio wave propagation over irregular sea surfaces led to the development of radio oceanography. By analyzing scattered signals, he established the field's fundamental parameters, such as amplitude, phase, and frequency (Doppler) characteristics.
Technological Innovations
Braude participated in the development of powerful radio wave generators and the first radar system in the Soviet Union. For his contributions, he received the Stalin Prize (1952), the USSR State Prize (1977), and the A.S. Popov Gold Medal (1983).
