Herbert Philipp examining a high vacuum tube used in measuring the photoelectric emission from germanium crystals.
Wednesday, February 22, 2017, 5:00 pm EST
University of Pennsylvania (Philadelphia, PA)
Tuesday, February 21, 2017, 11:00 pm EST
The New York Academy of Medicine (New York, NY)
Tuesday, February 21, 2017, 12:00 pm EST
Monday, February 20, 2017, 8:30 pm EST
University of Pennsylvania (Philadelphia, PA)
Monday, February 20, 2017, 5:00 pm EST
Chemical Heritage Foundation (Philadelphia, PA)
Monday, February 20, 2017, 6:00 am EST
Columbia University (New York, NY)
Friday, February 17, 2017, 3:30 pm EST
Thursday, February 16, 2017, 11:30 pm EST
Hagley Museum & Library
Thursday, February 16, 2017, 9:00 pm EST
Smithsonian Institution (Washington, DC)
Wednesday, February 15, 2017, 6:00 pm EST
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