Humans Emit A Faint Visible Light, Our Bodies Bioluminesce

While extremely dim, human bodies continuously emit visible light, a phenomenon called bioluminescence, though it's about 1,000 times fainter than the sensitivity of the naked eye. It's strongest in the afternoon.

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https://www.scientificamerican.com/article/human-body-glows-with-visible-light/

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Published: March 27, 2026
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Physics Biology Weird Science Human Body Bioluminescence Light Emission Glow

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