Lights and optics Essay Example | Topics and Well Written Essays - 1250 words

whites and optics - try on ExampleThis theory formulated a new way of visualization of the propagation of thrives called as Huygens Principle. nitrogens Particle Theory normalitys particle theory of light is also cognise as the Corpuscular Theory of Light. Newton published Opticks in the year 1704, 17 years after(prenominal) the publishing of Principia (Newtons Particle Theory). In Opticks, Newton say that light is do up of little masses, which implies that a horizontal light beam near the earth forms a parabola, olibanum undergoing a projectile motion. The immensity of the speed of particles of which light is composed is the reason why it is observed as a straight line in spite of its projectile motion. The speed of the travelling of light is 300m per microsecond, during which it should pass a distance y = 1/2gt2 = 5*10-12 m, much too small to be seen (Newtons Particle Theory). The particle model easily explained a range of the then know properties of light. For instance, it explained why the angle of incidence and the angle of reflection of light were equal as light reflected from a serene surface. This also explained the phenomenon of bouncing back of a frictionless elastic ball from a smooth surface. Refraction is a major property of the particle theory of light. ... on of wave was in latitude solicitude to the wave travels direction rather than perpendicular to the wave travel direction as happens in the case of light. Although the Corpuscular Theory of Light could explain the phenomena of primary and secondary rainbows, notwithstanding it failed to lay down an appropriate explanation of the supernumerary bow, the iridescent cloud, or the corona. The Wave Theory of Light Huygens proposed a successful theory of the wave motion of light in three dimensions. In this theory, Huygens said that light wave emerges from surfaces like onions layers. Light waves are spherical in akin mediums or vacuum. As the wave surfaces propagate with the speed of light, they spread out. According to Huygens, gravity does not come across the light waves. Huygens disagreed with Newton saying that the speed of light reduces as it travels from air to water whereas it increases when it moves from water to air. Later, Huygens was establish to be correct. Each color exhibited by the wave as it spreads out from the source carries a antithetical wavelength. Supernumerary bows could be explained with the assumption of light as a wave. Huygens wave theory elaborates the reason why light spreads out of a slit or a pin hole instead of do a straight line. Although the theory of Newton preceded Huygenss, yet early experiments were explained better by the theory of Huygens. Huygenss principle can be used to assess the location of a certain wavefront in the future if its present location is known. The Dual Nature of Light In the year 1803, Thomas unexampled shone light through a screen to study the interference of light waves. The screen had two every bit separated slits. As light passed through them, it emerged spreading out following the Huygens principle. The two wave fronts