Why is light sometimes described as rays and sometimes as waves?
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There are two theories of the character of light. Particle theory and wave theory.
According to particle theory light is stream of tiny little particles. The tiny particles travel along a straight line. This straight line of light is called light ray. Einstein`s photoelectric effect proved that light is made of little particles.
When the light is allowed to pass through double slits in young’s experiment, the lights passing through two slits interfere. Only waves undergo interference, so young`s experiment proves that light is wave.
Textbook: Physics: Principles with Applications
Author: Douglas C. Giancoli
This textbook survival guide was created for the textbook: Physics: Principles with Applications, edition: 6. Physics: Principles with Applications was written by and is associated to the ISBN: 9780130606204. The full step-by-step solution to problem: 3Q from chapter: 24 was answered by , our top Physics solution expert on 03/03/17, 03:53PM. The answer to “Why is light sometimes described as rays and sometimes as waves?” is broken down into a number of easy to follow steps, and 11 words. Since the solution to 3Q from 24 chapter was answered, more than 712 students have viewed the full step-by-step answer. This full solution covers the following key subjects: sometimes, Rays, light, described, waves. This expansive textbook survival guide covers 35 chapters, and 3914 solutions.