![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhYxADdRMUI0e35mIUbm7V3ayw4wcpIsx_b8ziBrzjtrLMwZgxO42bNXlcE4gmdPdNulWACKB1K1FR4osfE1jDxf22RTb37jRQTFdN6URmt8xV5YtKCm2xZYIP8UfPJJ2iFitTm4TxrwPtQ/s320/RAINBOW.jpg)
Newton originally (1672) named only five primary colours: red, yellow, green, blue and violet.
Only later did he introduce orange and indigo, giving seven colours by analogy to the number of notes in a musical scale.
From a physics point of view, the rainbow spans a continuous spectrum of colours—there are no "bands."
Red = , Orange = , Yellow = , Green = , Blue = , Indigo = , Violet = .
Red = , Orange = , Yellow = , Green = , Blue = , Indigo = , Violet = .