<Table> <Tr> <Td> </Td> <Td> This article includes a list of references, but its sources remain unclear because it has insufficient inline citations . Please help to improve this article by introducing more precise citations . (March 2015) (Learn how and when to remove this template message) </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> This article includes a list of references, but its sources remain unclear because it has insufficient inline citations . Please help to improve this article by introducing more precise citations . (March 2015) (Learn how and when to remove this template message) </Td> </Tr> <P> Young's interference experiment, also called Young's double - slit interferometer, was the original version of the modern double - slit experiment, performed at the beginning of the nineteenth century by Thomas Young . This experiment played a major role in the general acceptance of the wave theory of light . In Young's own judgement, this was the most important of his many achievements . </P> <P> During this period, many scientists proposed a wave theory of light based on experimental observations, including Robert Hooke, Christiaan Huygens and Leonhard Euler . However, Isaac Newton, who did many experimental investigations of light, had rejected the wave theory of light and developed his corpuscular theory of light according to which light is emitted from a luminous body in the form of tiny particles . This theory held sway until the beginning of the nineteenth century despite the fact that many phenomena, including diffraction effects at edges or in narrow apertures, colours in thin films and insect wings, and the apparent failure of light particles to crash into one another when two light beams crossed, could not be adequately explained by the corpuscular theory which, nonetheless, had many eminent supporters, including Pierre - Simon Laplace and Jean - Baptiste Biot . </P>

The phenomenon of interference is used to prove that light is