Question

Name the colours in the spectrum that cannot be seen with the naked eye.​

Answer 1

$\huge\tt\red{Answer}$

The human eye can only see visible light, but light comes in many other "colors"—radio, infrared, ultraviolet, X-ray, and gamma-ray—that are invisible to the naked eye. On the other end of the spectrum there is X-ray light, which is too blue for humans to see.