When light moves from air into glass or plastic it is refracted close refractionProcess by which a wave changes speed and sometimes direction upon entering a denser or less dense medium, eg a light ...

The process through which light rays falling on the surface on an object are sent back is called reflection of light. Thus, when light falls on the surface of an object it sends back the light. The ...

Rays of sunshine are one of those natural sights that leave indelible marks on our minds and memories. Whether it's sunlight filtering through a cloud or poking through the trees in a forest, the rays ...

World Sight Day 2020: It is observed on the second Thursday of October and this year it falls on 8 October. The day aims to focus attention worldwide on blindness and vision impairment. The Human eye ...