the.com/phosphorescence

the universe's slow-release glow, hoarding light by day to spend it all night

means The property of a substance to keep glowing softly for a while after the light hitting it has been switched off — a delayed, lingering luminescence, unlike the instant flash of fluorescence.

from Built from Greek 'phōsphoros,' the 'light-bearer' — 'phōs' (light) plus 'pherein' (to carry) — the same name the Greeks gave the morning star, Venus. The element phosphorus borrowed that name in the 17th century because it glowed eerily in the dark, and 'phosphorescence' followed as the word for that very glow, with the noun-ending '-escence' marking it as an ongoing state of becoming light.

slow electrons
trapped energy leaks out for minutes or hours
vs fluorescence
that one quits the instant light stops
named for venus
phosphorus means light-bearer, the morning star
glowing rocks
some minerals shine in the dark after sunlight
old matchsticks
white phosphorus glows by quietly oxidizing in air
for instance

firefly bioluminescence — photinus pyralis beetles produce continuous glow from luciferin oxidation in abdomens

deep sea anglerfish lure — melanocetus johnsonii uses bacterial symbiosis to glow at 1000m depths in atlantic

dinoflagellate bioluminescence — lingulodinium polyedrum creates blue waves along california coast when disturbed

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