What is a diffraction grating?
A) a flat, rectangular array of closely spaced photosensitive cells
B) a piece of glass with thousands of closely spaced, parallel grooves
C) an array of many radio telescopes used to observe a single source simultaneously
D) a triangular prism of solid glass used to disperse light into its colors

Question

Quizplus · Accepted Answer

A diffraction grating is a piece of glass or plastic with thousands of closely spaced, parallel grooves. It is used to diffract light and split it into its component colors, similar to a prism.

What Is a Diffraction Grating