Question

Define refraction.
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Answer 1

Answer:

refraction is the change in direction of a wave passing from one medium to another or from a slow change in the medium. Refraction of light is the most commonly observed phenomenon, but other waves such as sound waves and water waves also experience refraction.

Answer 2

the fact or phenomenon of light, radio waves, etc. being deflected in passing obliquely through the interface between one medium and another or through a medium of varying density.

• change in direction of propagation of any wave as a result of its travelling at different speeds at different points along the wave front.
• measurement of the focusing characteristics of an eye or eyes.