C.K.N. Patel with his experimental 'flowing gas' laser. The glowing tube contains nitrogen in which electrical discharge is taking place.
Tuesday, April 23, 2013, 5:00 pm EDT
Chemical Heritage Foundation, Brown Bag Lecture
Sunday, April 21, 2013, 7:00 pm EDT
Wagner Free Institute of Science, Temple University Libraries, Philadelphia Area Center for History of Science
Saturday, April 20, 2013, 2:00 pm EDT
Hagley Museum and Library
Friday, April 19, 2013, 10:00 am EDT
Friday, April 19, 2013, 9:00 am EDT
Thursday, April 18, 2013, 11:00 pm EDT
Philadelphia Area Seminar on the History of Mathematics, Villanova University
Thursday, April 18, 2013, 8:00 pm EDT
Johns Hopkins Program in the History of Science, Medicine and Technology
Thursday, April 18, 2013, 4:45 pm EDT
Wednesday, April 17, 2013, 11:00 pm EDT
Chemical Heritage Foundation
Wednesday, April 17, 2013, 2:00 pm EDT
Pennsylvania Hospital
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