Louis Dunoyer de Segonzac
Louis Dominique Joseph Armand Dunoyer de Segonzac (14 November 1880 – 27 August 1963) was a French physicist. He was awarded the Valz Prize by the French Academy of Sciences in 1929 for research on spirit levels and on photoelectric cells as applied to astronomy.

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1880 births
1963 deaths
École Normale Supérieure alumni
Knights of the Legion of Honour
French physicists
Optical physicists