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“Dalton collecting marsh-flies gas”
Jean Perrin (at Nils Perrin)
Roger Bacon, ca. 1214-1292
G.E. Hale, J. Muir, Hooker, A. Carnegie, J.A.B. Scherer
Boulton and Watt beam engine
Lewis Swift, 1820-1913
Christiaan Huygens, 1629-1695
Original 200″ mirror after re-annealing
Vannevar Bush
Wolfgang Pauli
Equatorial Armillary sphere by Tycho Brahe
Fourth International Congress for Applied Mechanics, Cambridge
Benedict Spinoza, 1632-1677
Isaac Newton, 1642-1727
Bailey Willis
Rene Descartes, 1596-1650
Harvard Mt. Wilson Observatory
Robert Millikan, A. Compton, Marie Curie and Marconi at Nuclear Physics Congress, Rome, 1931.
Arnold Sommerfeld
Plato, 427-347 B.C.