Broglie, Maurice

In the discussion that followed a number of participants took the floor Lise Meitner, Werner Heisenberg, Enrico Fermi, Maurice de Broglie, Wolfgang Bothe, and Patrick Blackett. 

During this same period de Broglie s brother Maurice was studying experimental physics, and he was particularly interested in x rays. The brothers frequently discussed x rays, and their dual nature (both wavelike and particle-like behavior) suggested to Louis that this same particle-wave duality might also apply to particles such as electrons. 

Louis-Victor Pierre Raymond de Broglie (1892-1987) was studying history at the Sorbonne, carefully preparing himself for a diplomatic career, which was a very natural pursuit for someone from a princely family, as he was. His older brother Maurice, a radiographer, aroused his interest in physics. World War I (Louis did military service in a radio communications unit) and the study of history delayed his start in physics. 

Maurice de Broglie, Scientia 27 (1920) 105. See also J. L. Heilbron, H G J Moseley (Berkeley University of California Press, 1974) Flyleaf. 

G. F., 1922) inferred from the observation at optical scales of line singularities in the since-called Smectic-A (SmA) phases that theses phases were lamellar. Diffraction methods were not yet invented, and the discovery of the lamellarity, which was some years later confirmed by his son Edmond (X ray diffraction), a student of Maurice de Broglie, was at that time based only on the geometrical properties of these singularities. These singularities were quite remarkable, made of pairs of conics, an ellipse E and one of the branches of an hyperbola... 

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