Posted by MADHURI.M.S on July 14, 2014, 10:08 p.m.
WE ALL KNOW WHAT LIGHT IS.WE ALSO KNOW THAT THE SUN,FIRE,BULBS AND GLOW WORMS ALL GIVE US LIGHT. BUT WHAT EXACTLY IS LIGHT.
LIGHT IS A FORM OF ENERGY THAT WHICH WE CAN SEE.IT IS MADE UP OF BILLIONS OF TINY PARTICLES CALLED PHOTONS.THESE PHOTONS TRAVEL FROM ONE PLACE TO ANOTHER IN WAVES.
THE LIGHT THAT WE CAN SEE CONSIST OF PHOTONS THAT MOVE AT A WAVE LENGTH THAT MAKES IT VISIBLE,AND IS KNOWN AS VISIBLE LIGHT.