A small drop of water that is free to fall in air will contract into a spherical ball. Suppose that sunlight (this will be as if from infinity) passes into the drop. Approximately where will an image of the Sun form? Water has an index of refraction of about 1.33 for visible light, and to answer this question consider what happens when light passes through the first surface from air into the water. Where does it go? Hint: If in doubt about your math, try an experiment at home. You can use sunlight or a distant flashlight to illuminate a suspended water drop. At the back surface of the drop. Spherical drops cannot form an image. Close to the back far side of the drop, on the outside. Close to the back side of the drop, on the inside
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.
A small drop of water that is free to fall in air will contract into a spherical ball. Suppose that sunlight (this will be as if from infinity) passes into the drop. Approximately where will an image of the Sun form? Water has an index of refraction of about 1.33 for visible light, and to answer this question consider what happens when light passes through the first surface from air into the water. Where does it go?
Hint: If in doubt about your math, try an experiment at home. You can use sunlight or a distant flashlight to illuminate a suspended water drop.
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At the back surface of the drop. |
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Spherical drops cannot form an image. |
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Close to the back far side of the drop, on the outside. |
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Close to the back side of the drop, on the inside |
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