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Discover the science behind the phenomenon of glow in the dark, and how it can be used for fun and practical purposes. Learn more on sciencefocus.com.
- Things Glow Because of Phosphorescence
- Why Glow in The Dark Things Are Green
- Thermoluminescence
- Triboluminescence
- Other Process That Produce A Glow
- Sources
Stars and paint and glowing plastic beads glow from phosphorescence. This is a photoluminescent process in which a material absorbs energy and then slowly releases it in the form of visible light. Fluorescent materialsglow via a similar process, but fluorescent materials release light within fractions of a second or seconds, which is not long enoug...
There are two main reasons why glow in the dark stuff mostly glows in green. The first reason is because the human eye is particularly sensitive to green light, so green appears brightest to us. Manufacturers choose phosphors that emit green to get the brightest apparent glow. The other reason green is a common color is because the most common affo...
Thermoluminescence is the release of light from heating. Basically, enough infrared radiation is absorbed to release light in the visible range. One interesting thermoluminescent material is chlorophone, a type of fluorite. Some chlorophane can glow in the dark simply from exposure to body heat!
Some photoluminescent materials glow from triboluminescence. Here, exerting pressure on a material imparts the energy needed to release photons. The process is believed to be caused by the separation and joining of static electrical charges. Examples of natural triboluminescent materials include sugar, quartz, fluorite, agate, and diamond.
While most glow-in-the-dark materialsrely on phosphorescence because the glow lasts a long time (hours or even days), other luminescent processes occur. In addition to fluorescence, thermoluminescence, and triboluminescence, there are also radioluminescence (radiation besides light is absorbed and released as photons), crystalloluminescence (light ...
Franz, Karl A.; Kehr, Wolfgang G.; Siggel, Alfred; Wieczoreck, Jürgen; Adam, Waldemar (2002). "Luminescent Materials" in Ullmann's Encyclopedia of Industrial Chemistry. Wiley-VCH. Weinheim. doi:10....Roda, Aldo (2010). Chemiluminescence and Bioluminescence: Past, Present and Future. Royal Society of Chemistry.Zitoun, D.; Bernaud, L.; Manteghetti, A. (2009). Microwave Synthesis of a Long-Lasting Phosphor. J. Chem. Educ. 86. 72-75. doi:10.1021/ed086p7223 de abr. de 2023 · Se trata del "glow in the dark" o en español, unas uñas que brillan en la oscuridad y que ya prometen ser nuestra nueva obsesión para el verano y todo gracias a lo icónicas que resultan, pero que a la vez mantienen los estilos más tradicionales durante esta época del año.
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11 de mar. de 2019 · Discover the science and history behind the natural vs. chemically induced luminescence of sea creatures and your favorite glow-in-the-dark items.
