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Refraction
Refraction Refraction is the bending of light as it passes from one medium to another. When light enters a medium with a higher refractive index (the medium...
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Refraction Refraction is the bending of light as it passes from one medium to another. When light enters a medium with a higher refractive index (the medium...
Refraction
Refraction is the bending of light as it passes from one medium to another. When light enters a medium with a higher refractive index (the medium with a greater density), it bends towards the normal (the line perpendicular to the surface of the medium). Conversely, when light enters a medium with a lower refractive index, it bends away from the normal.
Refraction plays a crucial role in various optical phenomena, including the formation of images on a screen during movie projection and the ability of optical instruments to collect and focus light.
Examples:
When light from a higher-indexed medium (such as water) enters a lower-indexed medium (such as air), it bends away from the normal. This is why you can see objects behind a curtain.
When light from a lower-indexed medium (such as glass) enters a higher-indexed medium (such as water), it bends towards the normal. This is why objects placed on the surface of a glass prism appear higher than they actually are.
A convex lens is used to converge light rays, while a concave lens is used to diverge light rays