In an experiment to monitor the Moon’s surface with a light beam, pulsed radiation from a ruby laser (wave = 0.69 mm) was directed to the Moon through a reflecting telescope with a mirror radius of 1.3 m. A reflector on the Moon behaved like a circular flat mirror with radius 10 cm, reflecting the light directly back toward the telescope on Earth.The reflected light was then detected after being brought to a focus by this telescope. Approximately what fraction of the original light energy was picked up by the detector? Assume that for each direction of travel all the energy is in the central diffraction peak.
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.
In an experiment to monitor the Moon’s surface with a light
beam, pulsed
to the Moon through a reflecting telescope with a mirror radius
of 1.3 m. A reflector on the Moon behaved like a circular flat
mirror with radius 10 cm, reflecting the light directly back toward
the telescope on Earth.The reflected light was then detected after
being brought to a focus by this telescope. Approximately what
fraction of the original light energy was picked up by the detector?
Assume that for each direction of travel all the energy is in the central
diffraction peak.
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