The earth orbits the sun in a nearly circular orbit of radius 1.5 × 10¹¹ m. The earth's axis of rotation is tilted by 23.4° relative to the plane of the orbit (see the drawing), so sunlight does not strike the equator perpendicularly. What power strikes a 0.29-m² patch of flat land at the equator at point Q?
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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The power radiated by the sun is 3.9 × 10²6 W.
The earth orbits the sun in a nearly circular
orbit of radius 1.5 × 10¹¹ m. The earth's axis of
rotation is tilted by 23.4° relative to the plane
of the orbit (see the drawing), so sunlight does
not strike the equator perpendicularly. What
power strikes a 0.29-m² patch of flat land at
the equator at point Q?
Number
Sunlight
Axis of rotation
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Equator
0
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23.40
Units
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