Have you ever looked through a spectroscope? Learn how to make one at home! Check out our video link:
A spectroscope, and the pattern of colors you see inside the container is called a spectrum. Visible light from the sun is actually made up of many different colors, or frequencies, of light. When you point your spectroscope at a light source, the CD acts like a prism, spreading light into its component colors. Violet light (the highest frequency of visible light) is at one end of the spectrum and red light (the lowest frequency of visible light) is at the other. The surface of the CD contains many small grooves. When light hits the CD, these little grooves separate the colors so they reflect at different angles onto the inside wall of the spectroscope.
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