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DR. JERROLD R. ZACHARIAS IN THE MOLECULAR BEAM LAB.
Object type: Negative Only
Maker: Date made: 1949-03
Measurements: 5" x 7"
Prof. Jerrold R. Zacharias (right) and MIT instructor Darragh E. Nagle (left) watch mechanic John J. McLean (center) install the vacuum system on a molecular beam apparatus. Zacharias headed the Transmitter Components section of the Radiaton Laboratory (Division 5). After the war he led the RLE's Atomic Beam Lab, studying and developing the atomic beam frequency standards that led to the creation of the cesium atomic clock.