GEORGY SHAFEEV / SCIENCE PHOTO LIBRARY GEORGY SHAFEEV / SCIENCE PHOTO LIBRARY
Glass prism and laser. Glass prism illuminated with green laser light, with a reflection seen in an optical disc. Compact discs (CDs) and digital versatile discs (DVDs) are examples of optical discs. Glass prisms are optical devices used to refract and disperse light passing through them.
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