Problem #6 A) A visible light wave has a wavelength of 470 nm. What is its frequency in a vacuum? B) The light wave enters a medium with an index of refraction of 1.7. If its frequency remains the same, what is its new wavelength (in nm)? C) If the angle of incidence in part (b) was 24°, what is the refracted angle in the new medium? D) Some of the light in part (b) will be reflected at the surface of the new medium. What is the angle of reflection? E) What is the critical angle for the Fight from part (b) to be totally internally reflected if it reaches a boundary layer of water (n = 1.33)?
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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