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| january '10 days | about |
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ARCHIVE jan dec nov sept june may march february january 2008 |
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black light and glow rings Using black light, the gin and tonic glows in
the dark. The colors we see are determined by the wavelength of light energy. Unlike some insects, humans can only view the spectrum from red to violet. However, other invisible “colors” exist above and below this spectrum. |
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The “color” above red is called infra-red and the color below violet is called ultraviolet. Ultraviolet light will cause fluorescent or phosphorescent pigments to fluoresce, emitting visible light. – Glow Inc. Link
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Party glow rings. The glow light is made of two parts which when mixed together
create the chemical reaction which makes them glow. |
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Glow
sticks work by a chemical reaction called “chemiluminescence” which causes
light to be generated. (That's a trivia question for some party games!)
By breaking up the word "chemiluminescence" into 2 parts, chemi
and luminescence we can better understand. Luminescence is emission of
light not caused by a rise in temperature (the object emitting light
stays cold). The light is released by atoms returning from "excited" (charged)
state to normal "ground" state. It means, an object which glows,
first must absorb energy to get into "excited state." That
energy will be released (in form of light) by the object returning to
the ground state of energy. –
China Bessen Glow Technology Ltd. Link |
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| to read more on this topic, click here on entry for October Days, 2008 about: green fluorescent protein |
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