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.
Figure P23.59 shows a converging lens with radii R1 = 9.00 cm
and R2 = -11.00 cm, in front of a concave spherical mirror
of radius R = 8.00 cm. The focal points (F1 and F2) for the
thin lens and the center of curvature (C ) of the mirror are also
shown. (a) If the focal points F1 and F2 are 5.00 cm from the
vertex of the thin lens, what is the index of refraction of the
lens? (b) If the lens and mirror are 20.0 cm apart and an object
is placed 8.00 cm to the left of the lens, what is the position of
the final image and its magnification as seen by the eye in the
figure? (c) Is the final image inverted or upright? Explain.
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