short note on refraction of light
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A light wave traveling through glass travels at a different speed. When a light wave travels from the medium of air to the medium of water, its speed changes and it actually bends. This bending is called refraction. Refraction is often confused with reflection.
Refraction is the change in direction of a wave, caused by the change in the wave's speed. ... When a wave passes from one medium to another medium, the wave will change its speed and its direction. For example, when a light wave travels through air and then passes through water, the wave will slow and change direction.
Refraction is the change in direction of a wave, caused by the change in the wave's speed. ... When a wave passes from one medium to another medium, the wave will change its speed and its direction. For example, when a light wave travels through air and then passes through water, the wave will slow and change direction.
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Light refracts whenever it travels at an angle into a substance with a different refractiveindex (optical density). This change of direction is caused by a change in speed. For example, whenlight travels from air into water, it slows down, causing it to continue to travel at a different angle or direction.
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