Rainbow

A light rainbow after intense shower 

Some time after rain sun comes out  from behind the clouds and we saw a beautiful colorful scenery on the sky called rainbow. Rainbow has seven in colors and shaped like arc. Which comes up to the ground and its center is always on sun.Some time we observe rain bow double in one time

Rainbow in science

Rainbow is an arc shape spectrum seen opposite to the sun light if air contain water drops .we saw some time two bow of rainbow one is called primary and one is called secondary .Secondary bow is larger then primary and always has reversed color.

As we know that there are seven color ,.Rainbow exist because of light, drops and we can say  because of physics sunlight is white and seems color less.When sunlight enter  in a drop from behind ,light goes one medium in the air into another and that cause it slightly bent that process called refraction. Different wave length of light bend in different angle and this cause to separate light in wide angle  then we can see rainbow in different color ,red in outer.orange yellow green,blue indigo  and violet in the inner side.The measurement of angle between the entering light in a drop and the light that comes out is 42%.

In rainbow we can't distinguish between colors because our eyes are not critical in distinguish color and can only  see five colors in rainbow.


Some time we can see rainbow in sea while water spray created by waves  that kind of rainbow called spray bow.we  can see rainbow colors in water fall in mountains and also see the relection of rainow on water