Herbert Philipp examining a high vacuum tube used in measuring the photoelectric emission from germanium crystals.
Monday, October 2, 2017, 4:00 pm EDT
University of Pennsylvania (Philadelphia, PA)
Monday, October 2, 2017, 4:00 pm EDT
University of Pennsylvania (Philadelphia, PA)
Thursday, September 28, 2017, 10:30 pm EDT
American Philosophical Society and the Consortium for History of Science, Technology and Medicine
Thursday, September 28, 2017, 10:00 pm EDT
Wagner Free Institute of Science (Philadelphia, PA)
Thursday, September 28, 2017, 10:00 pm EDT
New York Academy of Medicine (New York, NY)
Thursday, September 28, 2017, 1:00 pm EDT
Library of Congress (Washington, DC)
Wednesday, September 27, 2017, 10:15 pm EDT
The Wagner Free Institute of Science (Philadelphia, PA)
Wednesday, September 27, 2017, 10:00 pm EDT
Columbia University (New York, NY)
Tuesday, September 26, 2017, 10:00 pm EDT
The New York Academy of Medicine (New York, NY)
Monday, September 25, 2017, 7:30 pm EDT
University of Pennsylvania (Philadelphia, PA)
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