Physicist. An expert on fluorescence, he discovered the Becquerel rays, emitted from the uranium salts in pitchblende, which led to the isolation of radium and to the beginnings of modern nuclear physics. For his discovery of radioactivity he shared the 1903 Nobel Prize for Physics with the Curies. ALS in French, signed 'Henri Becquerel,' one page, 4.5 x 7, November 16, 1906. Letter, in French, to an unidentified gentleman on black-bordered stationery. In fine condition, with a bisecting horizontal fold and a couple trivial tears to top edge. COA John Reznikoff/PSA/DNA and RRAuction COA.
