Harmut Kallmann German Physicist Warm 1956 Letter to American Female Physicist

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Harmut Kallmann German Physicist Warm 1956 Letter to American Female Physicist
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DESCRIPTION & CONDITION:
“Harmut Kallmann [1896-1978] was a German physicist. He is known for his work on the scintillation counter for the detection of gamma rays. Kallmann was born in Berlin in a Jewish family. He studied at the University of Göttingen and wrote his dissertation under Max Planck, completing it in 1920. After this he worked at the Kaiser Wilhelm Institute for Physical Chemistry and Electrochemistry. As a post-doctoral researcher he worked with Fritz Haber and Fritz London. In 1933 he was dismissed from the institute due to his non-Aryan Jewish descent. The companies IG Farben and AEG provided him a research lab to continue his work with some restrictions. Kallmann was actively hunted by the Nazi SS during WWII. They would often show up at his large home looking for him, but always came up the front walk, so it was easy for Hartmut and his wife Erika to spot their approach. At some point, he was found and taken to a cattle car for transport to a concentration camp. Erika, frantic, used her Catholic connections and found someone who had been a friend of the family and was in the SS himself. He, at great peril to his own well being, managed to sneak Hartmut off the cattle car and to safety. His children were not considered Jewish by the Nazi authorities and were not hunted. In 1948, Kallmann's knowledge about photomultiplier scintillation counters brought him to the United States as a research fellow for the U.S. Army Signal Corps Laboratory in Belmar, New Jersey and later established a research lab at New York University” [Wikipedia].
“Grace Marmor Spruch, a noted research physicist, was a Professor in the Department of Physics and Astronomy at Rutgers University, Newark where she was a member of the faculty for 47 years. Her husband Larry Spruch was a prominent theoretical physicist at New York University; they spent time in England in 1956/7.
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Letter (8.5”x11” in business-size envelope. Envelope with wear and soil.
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Stock #53982
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