When you're looking at someone you really love, your pupils dilate, letting more light into your eyes. That means the world is literally brighter to you.

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[–] 16 points 10 months ago (7 children)

Also, humans are very slightly bioluminescent.

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  • [–] 2 points 10 months ago (6 children)
  • [–] 10 points 10 months ago* (last edited 10 months ago)

    Sure, anything that's warmer than absolute zero radiates on the electromagnetic spectrum. The hotter something is the stonger the radiation. Since most living things heat up (some through actual self-heating, others through movement and other processes), pretty much every living thing counts as bioluminescent.

    Since humans have roughly 37°C core temperature, they mostly glow on the infrared spectrum.

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  • [–] 4 points 10 months ago (4 children)
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