Spectrum

From Simple English Wikipedia, the free encyclopedia

This article is about the visible spectrum. For all other uses see: Spectrum (disambiguation)

High-resolution spectrum of the Sun.  Dark lines appear at wavelengths of light that are absorbed by the atmosphere
High-resolution spectrum of the Sun. Dark lines appear at wavelengths of light that are absorbed by the atmosphere

The word spectrum was first used by scientists studying optics. They used the word to describe the rainbow of colors in visible light when separated using a prism.

Prisma and light
Prisma and light