Optical effects, the interplay of light and colour in Nature, are everywhere. Atoptics Highlights & Optics Picture of the Day feature and explore these effects with their sister site "Atmospheric Optics".

Atoptics Highlights/OPOD's format is a magnificent image with an accurate scientific description and explanation that often expands into other topics.

It is a rare privilege to get your images from around the world, to write about them and share them with readers.

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