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Whereas the term "fluorescence" tended to refer to luminescence that ceased immediately (by human-eye standards) when removed from excitation, "phosphorescence" referred to virtually any substance that glowed for appreciable periods in darkness, sometimes to include even chemiluminescence (which occasionally produced substantial amounts of heat).
Flying and glowing firefly, Photinus pyralis Female glowworm, Lampyris noctiluca. Bioluminescence is the emission of light during a chemiluminescence reaction by living organisms. [1]
Mexico City at night, showing skyglow A map from 1996 to 1997 showing the extent of skyglow over Europe. Skyglow (or sky glow) is the diffuse luminance of the night sky, apart from discrete light sources such as the Moon and visible individual stars.
Lunar horizon glow is a phenomenon in which dust particles in the Moon's thin atmosphere create a glow during lunar sunset. The Surveyor program provided the first data and photos of the phenomenon.
Adopted by Gen Z and Gen Alpha, it gained new prominence in 2024, according to Oxford, as a term used to capture concerns about the impact of consuming excessive amounts of "low-quality online ...
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One study found Motyxia that glowed brighter also tended to have larger cyanide glands and were thus more toxic to predators. While this implicates Motyxia's bioluminescence as an evolution for protection from predators, this study also notes that higher elevation millipedes glowed brighter. This finding led to the discovery that the more faint ...
Few foods are more appetizing to people than a juicy steak. Grilled to order and garnished with herbs like basil and chives, sauces such as au jus, peppercorn and A1, or vegetables like grilled ...