Image
Herbert Philipp examining a high vacuum tube used in measuring the photoelectric emission from germanium crystals.
Thursday, May 1, 2025, 2:00 pm EDT
Tuesday, April 29, 2025, 1:00 pm EDT
Monday, April 28, 2025, 11:00 am EDT
Friday, April 25, 2025, 1:00 pm EDT
Friday, April 25, 2025, 11:00 am EDT
Thursday, April 24, 2025, 3:00 pm EDT
Johns Hopkins University
Thursday, April 24, 2025, 11:00 am EDT
Thursday, April 24, 2025, 8:00 am EDT
Wednesday, April 23, 2025, 6:00 pm EDT
Johns Hopkins University
Wednesday, April 23, 2025, 10:00 am EDT
© 2026 Consortium for History of Science, Technology and Medicine | Copyright Infringement