SearchHands, A platform for bloggers and online earners who want to make money through blogging and other free lancing platforms, This blog is great choice for you.
Friday, January 16, 2015
what is refraction of light?
light travels at almos 300,000 km/s in air but slow down when it enters a diffrent materil such as water or glass.if a ray of light meets the new materail at an angle ,it bends. this bending is called refraction
as it leaves the glass it speeds up again and so bend away from the normal. the ray emerging from this ractangular block is parallel to the ray going in.
refrraction in different materials
when light enters amterial at an angls,it changes direction becuse its speed changes. if the material is very dense,the light slows down more and so the refraction is graeter.
apparent depth one of the effects of refractionis that the brain can be tricked into thinking that things are in a different place from where they really are. fish can compensate for refraction between water and air. this is how they can catch insects at the surface and avoid predators such as herons.