- Siegbahn, Kai Manne Borje Siegbahn Borje
- Schwinger, Julian Seymour Schwinger
- Joule, James Prescott
- Joliot
- Schrieffer, John Robert Schrieffer
- Dunning, John Ray
- Poynting, John Henry
- Van Vleck, John van Vleck Hasbrouck
- Allen, John Frank
- Lennard
- Cockcroft, John Douglas
- Stark, Johannes
- Bednorz, Johannes Georg Bednorz
- Friedman, Jerome Isaac
- Perrin, Jean Baptiste Jean Baptiste Perrin
- Cronin, James Watson
- Deževnica je James
- Jeans, James Hopwood
- Franck, James
- Van Allen, James Alfred
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