Lawrence Randolph Hafstad (June 18, 1904 – October 12, 1993) was an American

electrical engineer Electrical engineering is an engineering discipline concerned with the study, design, and application of equipment, devices, and systems which use electricity, electronics, and electromagnetism. It emerged as an identifiable occupation in the l ...

and

physicist A physicist is a scientist who specializes in the field of physics, which encompasses the interactions of matter and energy at all length and time scales in the physical universe. Physicists generally are interested in the root or ultimate caus ...

notable for his pioneering work on nuclear reactors and development of

proximity fuze A proximity fuze (or fuse) is a Fuze (munitions), fuze that detonates an Explosive material, explosive device automatically when the distance to the target becomes smaller than a predetermined value. Proximity fuzes are designed for targets such ...

s. In 1939, he created the first

nuclear fission Nuclear fission is a reaction in which the nucleus of an atom splits into two or more smaller nuclei. The fission process often produces gamma photons, and releases a very large amount of energy even by the energetic standards of radio ...

reaction in the

United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territorie ...

. Saxon, Wolfgang
"Lawrence R. Hafstad Dies at 89; Helped to Develop Nuclear Power"
(''

The New York Times ''The New York Times'' (''the Times'', ''NYT'', or the Gray Lady) is a daily newspaper based in New York City with a worldwide readership reported in 2020 to comprise a declining 840,000 paid print subscribers, and a growing 6 million paid ...

'': October 22, 1993)John D. Caplan (1994
''Memorial Tributes Lawrence R. Hafstad''
(National Academy of Engineering, Volume 7)

Biography

Hafstad was born in

Minneapolis, Minnesota Minneapolis () is the largest city in Minnesota, United States, and the county seat of Hennepin County. The city is abundant in water, with thirteen lakes, wetlands, the Mississippi River, creeks and waterfalls. Minneapolis has its origins ...

. He was the son of two

Norwegian Norwegian, Norwayan, or Norsk may refer to: *Something of, from, or related to Norway, a country in northwestern Europe *Norwegians, both a nation and an ethnic group native to Norway *Demographics of Norway *The Norwegian language, including the ...

immigrants. He attended the

University of Minnesota The University of Minnesota, formally the University of Minnesota, Twin Cities, (UMN Twin Cities, the U of M, or Minnesota) is a public university, public Land-grant university, land-grant research university in the Minneapolis–Saint Paul, Tw ...

, graduating in electrical engineering in 1926. He had begun working with the Carnegie Institution for Science from 1928. In 1931, he earned the

American Association for the Advancement of Science The American Association for the Advancement of Science (AAAS) is an American international non-profit organization with the stated goals of promoting cooperation among scientists, defending scientific freedom, encouraging scientific respons ...

Prize for his research with

Merle A. Tuve Merle Anthony Tuve (June 27, 1901 – May 20, 1982) was an American geophysicist who was the Chairman of the Office of Scientific Research and Development's Section T, which was created in August 1940. He was founding director of the Johns Hopkins ...

and

Odd Dahl Odd Dahl (3 November 1898 – 2 June 1994) was a Norwegian engineer and explorer. He is particularly remembered for his contributions to research in nuclear physics. Biography He was born at Drammen in Buskerud, Norway, the son of businessman ...

. He was awarded his

Ph.D. A Doctor of Philosophy (PhD, Ph.D., or DPhil; Latin: or ') is the most common degree at the highest academic level awarded following a course of study. PhDs are awarded for programs across the whole breadth of academic fields. Because it is a ...

in physics at

Johns Hopkins University Johns Hopkins University (Johns Hopkins, Hopkins, or JHU) is a private university, private research university in Baltimore, Maryland. Founded in 1876, Johns Hopkins is the oldest research university in the United States and in the western hem ...

in 1933. Between 1935 and 1947, he was a frequent participant at the Washington Conferences on Theoretical Physics sponsored by

George Washington University , mottoeng = "God is Our Trust" , established = , type = Private federally chartered research university , academic_affiliations = , endowment = $2.8 billion (2022) , preside ...

and Carnegie Institute of Washington. Between 1946 and 1954, he was a professor of physics at Johns Hopkins University. From 1947-1949, he was director of the Johns Hopkins University Applied Physics Laboratory. During that same period, he was executive secretary of the research and development board at the

Department of Defense Department of Defence or Department of Defense may refer to: Current departments of defence * Department of Defence (Australia) * Department of National Defence (Canada) * Department of Defence (Ireland) * Department of National Defense (Philippin ...

. From 1949 to 1955, he served as director of reactor development with the

United States Atomic Energy Commission The United States Atomic Energy Commission (AEC) was an agency of the United States government established after World War II by U.S. Congress to foster and control the peacetime development of atomic science and technology. President H ...

. In 1955, he became a vice president at the

General Motors Corporation The General Motors Company (GM) is an American Multinational corporation, multinational Automotive industry, automotive manufacturing company headquartered in Detroit, Michigan, United States. It is the largest automaker in the United States and ...

and was chief of its research laboratories. In 1968, Hafstad was elected to the

National Academy of Engineering The National Academy of Engineering (NAE) is an American nonprofit, non-governmental organization. The National Academy of Engineering is part of the National Academies of Sciences, Engineering, and Medicine, along with the National Academy ...

. Hafstad died on October 12, 1993, at his home in the Oldwick section of

Tewksbury Township, New Jersey Tewksbury Township is a township located in Hunterdon County, New Jersey and is located within the New York Metropolitan Areabr>As of the 2010 United States Census, the township's population was 5,993, reflecting an increase of 452 (+8.2%) from ...

Honors and awards

Medal of Merit Several countries award a military or civil medal called Medal of Merit: * Medal of Merit (Czech Republic) * Medal of Merit (Denmark) * Medal of Merit of the Dominican Woman * Medal of Merit of the National People's Army (East Germany) * Medal of M ...

of the

United States Navy The United States Navy (USN) is the maritime service branch of the United States Armed Forces and one of the eight uniformed services of the United States. It is the largest and most powerful navy in the world, with the estimated tonnage ...

(1946) *King's Medal in Defense of Freedom of the British Government (1946)

References

External links

Merle Tuve, Lawrence Hafstad, and Odd Dahl with a cloud chamber for high voltage work in 1931

Biography

Honors and awards

References

External links

Related Reading