Physicist / Astronomer Stamps

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    • Manuel Sandoval Vallarta


Manuel Sandoval Vallarta was born in Mexico City. In 1924, at age 25, he received his PhD at MIT. His dissertation, on Niels Bohr's atomic model from the standpoint of general relativity, was written under the guidance of Edgar Bright Wilson. After postdoctoral studies in Berlin and Leipzig, Sandoval Vallarta was appointed a professor at MIT. Sandoval Vallarta made basic contributions in several fields, including the theory of electric circuits, relativistic and nonrelativistic quantum mechanics, and gravitation, but his main impact was in the study of cosmic radiation. His studies on the nature and composition of cosmic radiation and on geomagnetic effects on its constituents gave him a distinguished place in the international scientific community and recognition as one of the authorities in the field.