Augustin Fresnel
See also: Fresnel
Augustin Jean Fresnel , born the May 10th 1788 with Broglie and dead the July 14th 1827 with City-in Avray, is a Physicien French. Founder of the Optical modern, it proposed an explanation of all the optical phenomena within the framework of the undulatory theory of the Lumière.
Biography
Wire of Architect, Augustin Fresnel is born with Broglie, in the the Eure. He enters to the central School of Caen at the 13 years age then to the Polytechnic school at 16 years and half (promotion 1804). In 1809, he becomes member of the National school of the Highways Departments with the service of the headlights. He is member of the Academy of Science in 1823 as well as Royal Society, which decrees to him the Médaille Rumford in 1824.Augustin Fresnel begins his career by carrying out many experiments on the luminous Interférence S, independently of those of Young, for which it forges the concept of Wavelength. He calculates the integral known as of Fresnel. He proves the first that two beams of light polarized in different plans do not have any effect of interference. From this experiment, he deduces that the undulatory movement of the polarized light is transverse and nonlongitudinal (as that of the sound) as one believed before him.
He is the first to produce a polarized light circular. Its formulas, known as of Fresnel, on the Réfraction are always used. In the field of optics applied, Fresnel invents the lens at level used to increase the capacity of the lighting of the Phare S. It dies of the Tuberculose in 1827 with City-in Avray, close to Paris.
Homages
Its name is registered on the Eiffel Tower.
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