Gravity.
(Or the shape of space - which is molded by gravity.)
change of medium causes light to bend
Yes,It bends when traveling from 1 media to another.
Everybody knows change in speed of light causes to bend light. But why does light bends towards normal when passing from rarer to denser and vice versa?
light travels in straight path and when speed of medium in which light travels change then it refract due to change in speed light rays bend and refract
refraction
change of medium causes light to bend
Yes,It bends when traveling from 1 media to another.
Everybody knows change in speed of light causes to bend light. But why does light bends towards normal when passing from rarer to denser and vice versa?
light travels in straight path and when speed of medium in which light travels change then it refract due to change in speed light rays bend and refract
The ray will bend towards the normal.
light travels in a straight line because it can only be bend by reflective objects.
refraction
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It might bend if it transfers from one medium to another, or when it hits another object. Hope this helps.
light is a photon wave, the color of the light depends on the length of the wave; as traveling is concerned, the density of water is greater and thus causes a beam divergence greater than in gas.
Normal. It takes a lot of mass to bend light.
It's pretty much a universal law of nature that everything travels in astraight path unless something else acts on it and causes it to bend.