File talk:Dispersive Prism Illustration by Spigget.jpg

fact-checking

This is an inaccurate illustration of a prism. This should not be used to show how light refracts. When light exits the right side of the prism it is separated into cool and warm colors on the top and bottom edges, with white light in the center. Depending on the angle, the cool and warm colors will cross at a given distance from the right side of the prism, creating green. —Preceding unsigned comment was added by 71.131.117.6 (talk) 22:18, 5 August 2010 (UTC) (UTC)

That depends on the size of the beam. For a narrow beam, a prism does indeed produce a full spectrum of colors. A bigger problem with the image is that, contrary to what is shown, the colors actually separate inside the prism. The image falsely shows a narrow beam of white light propagating inside the prism, and then separating suddenly into colors when it exits. This image should not be used for illustrating how a prism works.--Srleffler (talk) 01:45, 26 April 2011 (UTC)

Unfortunately, it has been used for just that (see next section). Arlo James Barnes 22:56, 2 October 2020 (UTC)

reuses

This file has been used in: Even In A Quantum Universe, Space Might Be Continuous, Not Discrete. Forbes.

(attributes but does not mention the license, violating the share-alike clause)