What is refraction of light? Does it differ in denser or rarer bodies?
Answers
The wavelength shrinks with reduction in velocity based on the refractive index of the denser medium. This also keeps the frequency of light the same as f = c/w, where c is the speed of light, w is the wavelength, and f is the frequency of light. The frequency stays the same. Light of a certain frequency does not transmutate to another frequency and change color while it is passing through a denser medium ! Remember the color of light is determined by its frequency strictly speaking ! So in a denser medium the wavelength shrinks with the reduction in velocity sumulataneously to maintain the frequency the same ! You can think of it from the great classical physics angle for the purpose of understanding, as an advancing line of particles that encounters resistance and slows down(velocity decrease) with the particles getting also more crowded together due to the imposed inherent impedance to movement through a denser medium, resulting in the wave peaks coming closer together(wavelength shortening) at the same time with no change in frequency ! (Remember the scene of the marching band encountering a wall in the comedy movie classic "Animal house" ??) Kaiser T, MD.
Answer:
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Explanation:
Refraction of light is the phenomenon of change in the path of light in going from one medium to another. In going from a rarer to a denser medium, the ray of light bends towards normal and in going from normal.
When light travels from air into water, it slows down, causing it to change direction slightly. This change of direction is called refraction. When light enters a more dense substance (higher refractive index), it 'bends' more towards the normal line.
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