$The brilliant, iridescent colors of hummingbird plumage are caused by the refraction of incident light by the structures of certain feathers. Like any diffraction grating or prism, these structures split light into its component colors, and only certain frequencies are refracted back to the viewer. The apparent color of any particular part of a feather depends upon the distance between the microscopic ridges in its gridlike structure. The resulting colors are much more vivid and iridescent than those of birds with only pigmented feathers.$

beautiful postural for a portrait.

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Author: dreamstime
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bird animal beak nature branch wildlife green wing flower finch leaf sparrow insect yellow blue twig brilliant iridescent colors hummingbird plumage caused refraction incident light structures feathers like diffraction grating prism split component frequencies refracted back viewer apparent color part feather depends distance microscopic ridges gridlike structure vivid birds pigmented beautiful postu postural potra potrait portrait feathers viewer structure