Carl Bjorn Braestrup

Carl Bjorn Braestrup (April 13, 1897 – August 8, 1982) was an American physicist, engineer and inventor who specialised in radiation safety at the New York Department of Hospitals and Columbia University.

Early life Carl Bjorn Braestrup was born in Copenhagen, Denmark, on April 13, 1897, the son of a Danish naval officer. In 1919 Braestrup emigrated to the United States.

In the early 1930s Braestrup developed one of the first film badge dosimeter to detect radiation exposure, a design later adopted by the Manhattan Project, the secret project to develop the atomic bomb.

Braestrup died on August 8, 1982, aged 85 in Middletown, Connecticut from complications following a stroke.

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