How a rainbow 🌈 from?

Formation of Rainbow 🌈 :

A rainbow is a circular ARC of colours formed in the sky.

We know that sunlight is composed of seven colours.

water droplets Present in the atmosphere atc like Several tiny  prisms which reflect light similar to a prism.A water droplets is optically denser than air Around it,Hence light rays Suffer refraction on Entering water droplets. Each colour inside the water droplets travel at a different speed and hence does not come out at the same time. This causes splitting of colours and hence for me formation spec entering a water droplets. Each colour inside the water droplets travel at a different speed and hence does not come out at the same time. This causes splitting of colours and hence formation of spectrum know as rainbow 🌈.

To view all rainbow rainbow, one March stand with the back facing the sun as a rainbow always forms opposite to the sun.

 Why does the sun happy to be read in colour during sunset and sunrise?

The sun appears To be red in  colour during sunrise  And sunset Because light travels The maximum distance Through the atmosphere to reach the observer. As a result of scattering, the light Loses colours with shorter wavelength such as violet indigo blue green and yellow. Therefore, only orange and red colour Reach us and the sun appears to be red in colour.

It is for the same reason that the red light is used to indicate high buildings, electrical tower, radio and Tina, etc Due To its maximum wavelength, scatters the least and can be spotted from a distance by the observer

What is prism?

A prism is An optically  transparent Device made up of glass having triangular basis and rectangle  side the rectangular surface are known as refraction surface of the prism the angle between any two refracting surface is called the angel of prism.the base of the prism is non-refracting. 

DISPERSION OF LIGHT? 

 Keep a prism in sunlight and observe carefully. What do you observe? The sun light on passing through the prism the split into different colours.It white light Consist of seven colours violet, Indigo, blue, green, yellow, orange and red (VIBGYOR) This band is called Sperctrum The phenomena of splitting of white light into component colours is called dispersion,The prison separated  the compliment Colour of white light because the reflective index of glass is different for different colours and hence colour travel with different speed inside the prism The value of refractive index of the glass is maximum for violet colour Surfers the maximum bendingA rainbow is a circular ARC of colours formed in the sky.

We know that sunlight is composed of seven colours.

water droplets Present in the atmosphere atc like Several tiny  prisms which reflect light similar 

 Sir Isaac Newton was the first person who is Sajid and then verified with his prism experiment that white colour kaun Sa consist of a band of colours we VIBGYOR Keep a prism in sunlight search that light grey feel on one of the reflecting surface obtained a proper band of seven colours on the screen