Define dispersion of light. Name the primary colours. What was the special device made by
Newton in this respect?
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The scattering of a light into its seven consequent colours is called dispersion of light. There are 7 primary colours :
(1) Violet
(2) Indigo
(3) Blue
(4) Green
(5) Yellow
(6) Orange
(7) Red
You can remember its as VIBGYOR.
Isaac Newton's 1666 experiment of bending white light through a prism demonstrated that all the colors already existed in the light, with different color "corpuscles" fanning out and traveling with different speeds through the prism.
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