Who Paints Rainbows In The Sky?

Electricity and Magnetism Level 3

Rainbows are a magical, spell bounding creation of nature. In a rainy season, on lucky days, rainbows can be witnessed. What is the science behind the rainbows?

Total internal reflection in perfectly spherical drops Interference of light Diffraction of light Dispersion of light

Rohit Gupta by Rohit Gupta , 34, India

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3 solutions

Rohit Gupta
Mar 17, 2016

When the white light from the sun enters into water droplets, then the droplets disperse the white light into its components. The angle of deviation depends on the wavelength of the colors. Therefore, the colors are separated at different angles.

If the light falls in the water droplets at certain angles, then this dispersed light gets internally reflected inside the drops. Due to which the components separate further and eventually comes out as a beautiful display of rainbow.

4 Helpful 0 Interesting 0 Brilliant 0 Confused

i think that Diffraction and Dispersion means the same, therefore, i got little confused.

Alex Vidal - 5 years, 2 months ago
Nikkil V
Mar 4, 2016

Its due to dispersion of light. Sunlight disperse through rain drop

2 Helpful 0 Interesting 0 Brilliant 0 Confused

You can imagine it but the practical will be understandable clearly... The rainbow is displayed in sky through seven coloured band of different wavelength of light Sun light disperes through small water droplets...this only can be seen in rainy season ... Rather it, Take a prism or glass into the dark place and make slit to somewhere to get a ray of sun light on glass or prism ...it will disperes light clearly....

The Most hidden thing is that ,why light disperes? because of light ray is white which is made by all coloures of different wavelength.

1 Helpful 0 Interesting 0 Brilliant 0 Confused

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