A small coin is resting at the bottom of a swimming pool. Draw a ray diagram of the situation, showing at least two incident rays (one on each side of the normal) and their refracted rays at the water-air interface. Trace the refracted rays back into the water until they converge. Now you can identify some right triangles that will allow you to deduce the apparent distance below the water of the coin in terms of its actual distance and the index of refraction. Derive from this the formula for the apparent distance.
Refraction of Light
Refraction is a change in the direction of light rays when they travel from one medium to another. It is the bending of light when it goes through different media.
Angle of Refraction
Light is considered by many scientists to have dual nature, both particle nature and wave nature. First, Particle nature is one in which we consider a stream of packets of energy called photons. Second, Wave nature is considering light as electromagnetic radiation whereas part of it is perceived by humans. Visible spectrum defined by humans lies in a range of 400 to 700 nm wavelengths.
Index of Refraction of Diamond
Diamond, the world’s hardest naturally occurring material and mineral known, is a solid form of the element carbon. The atoms are arranged in a crystal structure called diamond cubic. They exist in a huge variety of colours. Also, they are one of the best conductors of heat and have a very high melting point.
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