Augustine Fresnel (1788-1827)

Fresnel was a French physicist who developed the transverse-wave theory of light, as a result of his work on lenses and optical interference.
Fresnel showed that normal sunlight consisted of vibrations that were at right angles (transverse) to the direction travelled by the light.
He also invented a type of lens in wich the surface is cut into a series of concentric steps resizing forwards the centre. These lenses are still widely used in light house


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