Lorentz, H. A. (Hendrik Antoon), 1853-1928
Found in 8 Collections and/or Records:
This collection provides a thorough record of George Ellery Hale’s activities. A prolific correspondent, Hale kept copies of most of his letters. The collections contains significant material relating to the theoretical and instrumental development of astrophysics, the history of the Mount Wilson and Palomar Observatories, and the early history of the California Institute of Technology. It also documents Hale’s work with the National Academy of Sciences and National Research Council.
Epstein was a physicist at California Institute of Technology from 1921-1953; he taught advanced courses in mathematical and theoretical physics. Collection includes general and family correspondence; personal and biographical material; notebooks; manuscripts; class notes by a Caltech student; books, mostly technical and in Russian; reprints of Epstein's writings.