the.com/luminescence
light without heat, the universe's way of glowing instead of burning.
means The emission of light by a substance through means other than heat — chemical reactions, biological processes, or absorbed energy released as a cool glow.
from From Latin 'lumen' (light) — the same root behind 'illuminate' and 'luminous' — fitted with the suffix '-escence,' which marks a process of becoming (as in 'effervescence' or 'phosphorescence'). The word was coined by physicist Eilhard Wiedemann in the late 19th century to name precisely this: light that is not the red-hot glow of incandescence, but light born some other, cooler way.
- cold light
- emits photons without thermal radiation, unlike a bulb
- deep sea
- most deep-ocean creatures produce their own light
- glowing forests
- some fungi shine to lure spore-spreading insects
- firefly efficiency
- converts nearly all energy to light, almost no waste heat
- named species
- radium's eerie glow once decorated watch dials
firefly bioluminescence — photinus pyralis produces light through luciferin oxidation in their abdomens
anglerfish lure — melanocetus johnsonii uses bacterial bioluminescence to attract prey in the deep ocean
bioluminescent dinoflagellates — noctiluca scintillans creates glowing waves off california and new zealand coasts
glow worm caves waitomo — arachnocampa larvae in new zealand produce sticky silk threads lit by bioluminescence to trap insects