Lets know about Light.
Study of light is called optic.
Light travels in straight path
Light has electromagnetic energy.
Generally there are two type of light, (a) Visible light (b) Invisible light.
When we talk about visible light is known as light or optic. e.g, Sun light.
When we talk about invisible light is called electromagnetic radiation, e.g, ultraviolet radiation
Light is made by very tiny packets called photon.
Every photons contain lots of energy.
Speed of light changes with change of mediums (objects or materials).
Light
Light and its components
When light passing through the prism
Lets know about Shadows.
99.99% Space is dark (full of shadows).
Because there is no sufficient light, light is visible when it has an object in its path.
No one has seen the shadow of moon, sun, Jupiter, mars, earth, Venus etc in space.
There is no shadow of astronauts has found in moon.
In ancient time people was thinking about shadow formed by sun, thought lot and utilized this principle in making the world’s most primitive clocks, the sundials.
Light and shadow combination
shadow and light combination
Earth from space
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