Question

Thomas young showed that light passing through two parallel narrow slits produce a pattern of light and dark fringes. Did you support or contradict Newton's corpuscular theory of light?

Answer 1

Isaac Newton pointed out in his work Opticks that light consists of a flow of particles. Generations have accepted this idea in which light was believed to be composed of large numbers of billiard-ball type material bodies, visualized as spherical objects able to propagate through the vacuum.
But in the early nineteenth century, Thomas Young’s work contradicted this established view. He apparently started with a pro-wave agenda, which he communicated to the scientific world by means of a series of well-constructed experiments. First, he built a ripple tank to demonstrate the nature of wave propagation in which he explained the phenomenon of interference which showed that when the surface of calm water was disturbed at two separate points, waves are produced in widening concentric circles. A distinctive interference pattern could be observed at points where the waves from the two separate sources intersected, Each wave consisted of successive high and low amplitudes. When the ridges coincided, still higher perturbations could be observed and where the troughs intersected, lower dips were noticed. This unique behavior is because of constructive and destructive interference.
In another experiment, he demonstrated that light energy must propagate in the form of wave-like oscillations, presumably in some luminiferous medium that pervades all of space. He set up a light source adjacent to an opaque barrier in which he had cut two parallel slits. The two beams of lift after passing through the slits struck a nearby screen. This interference pattern with fringes similar to the water waves in Young’s ripple tank was seen to establish the wave theory of light, as opposed to Newton’s particle theory.