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The Bernard Vonnegut Papers document Vonnegut's career as a researcher in the field of atmospheric science with a focus on his time at GE, Arthur Little, and the State University of New York at Albany. The collection includes technical memoranda, research, data, inventions and patent forms, equipment specifications, drawings, figures, handwritten notes, manuscripts, reports, correspondence, publicity materials, course materials, news clippings, photographs, memorabilia, and audio/video materials
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This series documents the Project Cirrus program, a weather modification initiative undertaken by GE along with the United States Signal Corps, Office of Naval Research, and the United States Air Force, with general oversight handled by the Department of Defense. As part of the effort, Dr. Vonnegut discovered that AgI, Silver Iodide, was a superior nucleation agent. This discovery significantly influenced the science of artificial precipitation and this method came to be adopted as the chief means of "rain making".