This page describes an image Light Dispersion by a Triangular Prism
Download File ( image 777.82 kB)
Image caption:
This photograph shows a prism splitting a beam of white light into its component colors — a beautiful demonstration of optics, the branch of physics that studies how light behaves and interacts with materials. When white light enters the prism, different wavelengths (colors) bend by different amounts because of a process called refraction. This separation of colors produces a spectrum — similar to a rainbow — revealing that white light is actually made up of many colors combined going from blue, through green and yellow to red.
Understanding optics helps scientists and engineers design lenses, microscopes, telescopes, cameras, and many other tools that shape and control light for practical use. The way the prism disperses light into a spectrum is the same principle that makes rainbows form in the sky when sunlight passes through raindrops.
Image credit: Kelvinsong Credit Link
Related glossary terms:
Light
, Optics
, Visible Spectrum
Image license: CC0 1.0 Universal (CC0 1.0) Public Domain Dedication CC0 1.0 Universal (CC0 1.0) Public Domain Dedication icons
The media file captions presented on the OAE website were written, translated and reviewed by a collective effort from the OAE, the OAE Centers and Nodes, the OAE National Astronomy Education Coordinators (NAECs) and other volunteers. You can find a full list of credits for our translation project here. All media file captions are released under a Creative Commons CC BY-4.0 license and should be credited to "IAU OAE". The media files themselves may have different licenses (see above) and should be credited as listed above under "credit".
If you notice a factual error in this caption or an error in any of its translations then please get in touch.
.jpg){kind=link}
