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  • Which colour of the visible spectrum did Isaac Newton inv...
Multiple choice

Which colour of the visible spectrum did Isaac Newton invent?

  1. Blue

  2. Indigo

  3. Violet

  4. Red

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Isaac Newton originally identified seven colors in the spectrum: red, orange, yellow, green, blue, indigo, and violet. He included indigo to match the seven notes of a musical scale.

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