Where Does Light Come From?

(Where are the sources of light?)


Shut your eyes - ! - all you see is darkness or something like night time. Now open your eyes again. If it is day time, you will see that light is all around you.

Light - all we need

There are two types of light: Natural source of light and artificial source of light. Sun is the most important natural source of light. In daytime sunlight up our world and evening stars twinkle in the sky. There are other sources of natural light too. In some aprt of hte world you canfind insect called fireflies, which give off a pale, greenish yellow light that flashes or glows in the dark. Even deep in the sea, some of the fish are able to produce flashes of light in the darkness and in extreme northern of southern region of the world we might able to see the aurora (a dazzling display of colored lights that flicker in the sky at night). Man has made many things possible today we can see that most of place of the world is light up in evening time due to artificial source of light made by man. Light doesn't only enable us to see. It is also used to cut metal into complicated shapes or to perform delicate surgical operation! Light even help to remain healthy whensunlight shines on our skin. Our body makes a vitamin called Vitamin D, Which helps our teeth and bones to grow healthy.

Light shows happiness and way to the brightness.