Dr. Jean Piccard, stratosphere balloonist demonstrated
Dr. Jean Piccard, stratosphere balloonist demonstrated automatic ballast release. June 7, 1945. The University of Minnesota professor of aeronautical engineering said this type of device was used on Japanese balloon bombs set adrift toward U.S. West Coast during World War II. (CSU_2015_9_1090)
Picture No
11060661
Media ID
45291581
Size
2145px x 3000px
(1.4MB)
Credit
Mary Evans / The Everett Collection
Source
Everett Collection
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1090 1507 Adrift Aeronaut Automatic Ballast Balloonist Bombs Demonstrated Minnesota Occupational Piccard Stratosphere String Toward
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