Question

who discovered that white light is mixture of seven colors
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Answer 1

Answer:

Newton discovered that white light is a mixture of 7 colours

Answer 2

Isaac Newton discovered this. he made a structure called Newton's wheel. in this, he showed the seven colours in a rainbow. furthermore, when he spun the wheel, it moved fast and you could only see white. this showed that write light is made of 7 colours.

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