French civil engineer and physicist whose research in optics led to the acceptance of the wave theory of light
Letter to Arago on biaxial birefringence, 21 September 1821 (translated).
Some or all works by this author were published before January 1, 1928, and are in the public domain worldwide because the author died at least 100 years ago. Translations or editions published later may be copyrighted. Posthumous works may be copyrighted based on how long they have been published in certain countries and areas.