Herbert Philipp examining a high vacuum tube used in measuring the photoelectric emission from germanium crystals.
Friday, May 19, 2017, 9:00 pm EDT
Drexel University (Philadelphia, PA)
Thursday, May 18, 2017, 10:00 pm EDT
Hagley Museum and Library (Wilmington, DE)
Thursday, May 18, 2017, 11:30 am EDT
Hagley Museum & Library (Wilmington, DE)
Monday, May 15, 2017, 4:00 pm EDT
Chemical Heritage Foundation (Philadelphia, PA)
Friday, May 12, 2017, 8:00 pm EDT
Linda Hall Library
Friday, May 12, 2017, 5:30 pm EDT
Columbia University (New York, NY)
Friday, May 12, 2017, 3:00 pm EDT
New York Academy of Medicine (New York, NY)
Thursday, May 11, 2017, 10:00 pm EDT
New York Academy of Medicine (New York, NY)
Thursday, May 11, 2017, 6:00 pm EDT
Wednesday, May 10, 2017, 9:30 pm EDT
American Institute of Physics (College Park, MD)
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