11/11/2023 0 Comments Compare refraction and diffractionIn the particular case where the wave passes from a slow medium to a fast medium, there is a critical angle where the entire wave is reflected. The intensity of light refracted versus reflected depends on the angle of incidence and refractive index of the medium. When one varies the angle of incidence of a wave passing from one medium to another, part of the wave is reflected and part is refracted. Without experimental evidence, Newton acknowledged that his theory is insufficient in explaining the partial reflection and partial refraction phenomenon of light. This results in the magnified or diminished and inverted or upright images. Light rays change in direction within concave and convex lenses due to the nature of their surfaces. Light corpuscles’ velocity remains constant unless acted upon by the external environment. Optics within lenses and through pinholes.This simple theory of light propagation and composition explains the basics of optics including:.At the time, all known waves required a medium to propagate (these are now defined as mechanical waves)Īdditionally, he explained different colours of light by proposing each colour is encoded by a light corpuscle of a particular size. ‘We can hear sound from behind an obstacle, but we don’t see light’īesides the ‘absence’ of diffraction, Newton used light’s ability to travel in a vacuum to support his particle model. He argued that light does not exhibit diffraction He argued that if light is a wave, we would be able to see light when a physical barrier is placed in front of the source, analogous to how sound travels around a physical barrier to reach our ears. Newton thought light cannot be a wave primarily because it did not show diffraction characteristics like sound.
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