Question

short note about the specturm

Answer 1

A spectrum is a condition that is not limited to a specific set of values but can vary, without steps, across a continuum. The word was first used scientifically in optics to describe the rainbowof colors in visible light after passing through a prism. As scientific understanding of light advanced, it came to apply to the entire electromagnetic spectrum.

Answer 2

it was introduced by newton refering to range of colours observed through when white light is passed through prism

in latin spectrum means image

spectrum is also refer to graphical representation of signal as a function of dependent variable

so ,it has been science applied to topics outside optics also