PHOSPHORESCENCE

fŏsˌfərĕsˈəns, luminescence produced by certain substances after absorbing radiant energy or other types of energy. Phosphorescence is distinguished from fluorescence in that it continues even after the radiation causing it has ceased. Phosphorescence was first observed in the 17th cent. but was not studied scientifically until the 19th cent. According to the theory first advanced by Philipp Lenard, energy is absorbed by a phosphorescent substance, causing some of the electrons of the crystal to be displaced. These electrons become trapped in potential troughs from which they are eventually freed by temperature-related energy fluctuations within the crystal. As they fall back to their original energy levels, they release their excess energy in the form of light. Impurities in the crystal can play an important role, some serving as activators or coactivators, others as sensitizers, and still others as inhibitors, of phosphorescence. Organo-phosphors are organic dyes that fluoresce in liquid solution and phosphoresce in solid solution or when adsorbed on gels. Their phosphorescence, however, is not temperature-related, as ordinary phosphorescence is, and some consider it instead to be a type of fluorescence that dies slowy.

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The Columbia Encyclopedia, Sixth Edition Copyright© 2004, Columbia University Press. Licensed from Lernout & Hauspie Speech Products N.V. All rights reserved.

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Questia Books and Articles on: Phosphorescence
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books on: Phosphorescence  - 657 results

       More book Results: 1-10 11-20 21-30 31-40 41-50 >>  
 
1.
Living Light
Book by E. Newton Harvey; Princeton University Press, 1940
Subjects: Phosphorescence
...Hughes. others in stimulating phosphorescence. These bands in the phosphorescent...the light which excites the phosphorescence, a fact known as Stokes...importance of materials showing phosphorescence and fluorescence for manufacture...
2.
Understanding the Old Man and the Sea: A Student Casebook to Issues, Sources, and Historical Documents
Book by Patricia Dunlavy Valenti; Greenwood Press, 2002
Subjects: Aged Men In Literature, Fishing Stories, American--History And Criticism, Hemingway, Ernest--1899-1961--Old Man And The Sea, Hemingway, Ernest--1899-1961--Old Man And The Sea--Sources, Sea Stories, American--History And Criticism
...he urinates off the boat, he notices phosphorescence in the water. BK: Whats happening...see where and in what context there is phosphorescence. And Santiago realizes that phosphorescence is the presence of organisms. He says...
3.
A History of Science - Vol. 3
Book by Henry Smith Williams, Edward H. Williams; Harper, 1904
...or cathode, appeared a greenish phosphorescence. This discovery was soon being investigated...Rontgen rays. He held that the heat and phosphorescence produced in a low-pressure tube...the glass seemed to enter into this phosphorescence also, for while lead glass produced...
4.
The Nature of Light & Colour in the Open Air
Book by M. Minnaert, H. M. Kremer-Priest; Dover Publications, 1954
Subjects: Color, Light, Meteorological Optics
...foretell by day whether the beautiful phosphorescence will be visible at night. Phosphorescence on the sea can often be seen splendidly...doubt whether what one sees is really phosphorescence or the white foam on the crests of waves...
5.
Human Personality and Its Survival of Bodily Death - Vol. 2
Book by Frederic W. H. Myers; Longmans, Green, and Co., 1903
Subjects: Immortality, Parapsychology--Research, Personality
...waves of many other amplitudes. . -- Phosphorescence . Phosphorus and some of its compounds...incandescence. To this head belongs the phosphorescence of decaying matter, when not due...inconvenience in extending the term phosphorescence to phenomena in which phosphorus is...
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journal articles on: Phosphorescence  - 37 results

       More journal Results: 1-10 11-20 21-30 31-37 >>  
 
1.
Toward an Aesthetic Marine Biology
Journal article by J. Malcolm Shick; Art Journal, Vol. 67, 2008
Subjects: Art education--Appreciation, Art education--Methods, Marine biology--Study and teaching
...first "drip" paintings, including Phosphorescence, the Abstract Expressionists interpretation...depicted by Wyeth. As noted elsewhere, Phosphorescence and other ocean-referent paintings...intertidal sand, making tracks of "phosphorescence" (a common historical misnomer in...
2.
Eros in the Sick Room: Phosphorescent Form and Aesthetic Ecstasy in D.h. Lawrence's Sons and Lovers
Journal article by Kimberly Coates; Journal of Narrative Theory : JNT, Vol. 38, 2008
Subjects: Aesthetics, Heterosexuality, Lawrence, D H (1885-1930), Linguistics, Literary criticism, Psychoanalysis, Reading, Sexuality
...Fiona Becket, Lawrences notion of "phosphorescence" suggests that "he is searching...whose iridescence is also always a phosphorescence: "the rainbow, the iridescence...turns instead towards the "citys gold phosphorescence . . . towards the faintly humming...
3.
Introduction
Journal article by John Beer, Max Blechman; Chicago Review, Vol. 52, 2006
Subjects: Ethics, Ideology, Poetry
...feet, Spread on the floor of night, ingots Of quivering phosphorescence, And all about were scattered chips Of pale cold light...microcosm; the universe of stars is reflected in the bits of phosphorescence scattered throughout the forest, and both in their turn...
4.
Renal Toxicogenomic Response to Chronic Uranyl Nitrate Insult in Mice
Journal article by Magali Taulan, Francois Paquet, Christophe Maubert, Olivia Delissen, Jacques Demaille, Marie-Catherine Romey; Environmental Health Perspectives, Vol. 112, 2004
Subjects: Colorectal cancer
...contents were determined in samples of kidney using a kinetic phosphorescence analyzer (KPA; Ejnik et al. 2000). Serum creatinine...determination of uranium in biological samples by kinetic phosphorescence analysis (KPA). J Pharm Biomed Anal 24(2):227...
5.
An Analogous Art: the Secret Agent and John Virtue's London Paintings and Drawings
Journal article by Hugh Epstein; The Conradian : the Journal of the Joseph Conrad Society (U.K.), Vol. 32, 2007
...gloomy dampness enveloped him. The walls of the houses were wet, the mud of the roadway glistened with an effect of phosphorescence, and when he emerged into the Strand out of a narrow street by the side of Charing Cross Station the genius of...
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magazine articles on: Phosphorescence  - 37 results

       More magazine Results: 1-10 11-20 21-30 31-37 >>  
 
1.
Hued Afterglow: Fingerprinting Diamonds Via Phosphorescence
Magazine article by Sid Perkins; Science News, Vol. 173, January 12, 2008
Subjects: Diamond crystals--Identification and classification, Diamond crystals--Properties, Diamonds--Identification and classification, Diamonds--Properties, Phosphorescence--Chemical properties
...Afterglow: Fingerprinting Diamonds Via Phosphorescence. by Sid Perkins The eerie phosphorescence displayed by a rare form of blue diamond...analyses suggest. ILLUSTRATION OMITTED Phosphorescence, a "glow-in-the-dark" process...
2.
Making Hypoxia Happen
Magazine article by Susan Jenkins; The Scientist, Vol. 16, August 19, 2002
...time assays for pO^sub 2^ is phosphorescence lifetime imaging based on oxygen-dependent quenching of phosphorescence.7 After injection of a near...Pennsylvania Medical School, excite phosphorescence with light through a light guide...
3.
New Products & Services
Magazine article by David E. Williams; American Cinematographer, Vol. 87, September 2006
...fluorescence, the glowing illumination that occurs when phosphor is exposed to light, and phosphorescence, which is the afterglow. Were relying on phosphorescence." Perlman notes that because the raised reference markers placed on the performers...
4.
Junior
Magazine article by Céline Keating; Acoustic Guitar, Vol. 21, September 2010
...hypnotic arpeggios and shifting harmonics to probe the boundaries between acoustic fingerstyle and shimmery, New Age-y phosphorescence with the same resdess experimentation she brings to all her music. (Rounder) -CELINE KEATING
5.
Walter Pater and Neville Cardus
Magazine article by Robin Daniels; Contemporary Review, Vol. 292, Summer 2010
Subjects: Cardus, Neville--Criticism and interpretation, Essayists--Criticism and interpretation, Journalists--Criticism and interpretation, Pater, Walter Horatio--Criticism and interpretation
...Notebooks). A few months after Pater died, Henry James said of him: He shines in the uneasy gloom - vaguely - with a phosphorescence, not a flame (letter to Edmund Gosse, 13 December 1894). The first letter of his surname stands for Pater...
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newspaper articles on: Phosphorescence  - 29 results

       More newspaper Results: 1-10 11-20 21-29 >>  
 
1.
The Beauty of an Empty Shore at Sunset or a Stretch of Emerald River on a Summer Afternoon Draws Me Back. Immersion in Water Is Exhilarating and So Much Fun; THIS LIFE
Newspaper article; The Mail on Sunday (London, England), August 30, 2009
...hot August night and I became a sparkling, glittering being with phosphorescence glowing all over me. It was the nearest I will ever get to having a halo. Phosphorescence is rare, the conditions need to be just right to see it, and when...
2.
Making Waves; A Landscape Architect with a Love of the Sea Has Given His Richmond Garden a Nautical Feel
Newspaper article; The Evening Standard (London, England), May 2, 2007
Subjects: Amino acids--Design and construction, Architects, Landscaping industry--Design and construction
...a bit over the top, but I wanted it to twinkle, like phosphorescence," Wilkie says. It is, of course, the deep-blue ocean...a bit over the top, but I wanted it to twinkle, like phosphorescence," Wilkie says. It is, of course, the deep-blue ocean...
3.
Less Marble
Newspaper article; The Washington Times, January 15, 2008
Subjects: A&E Television Networks, Cable television broadcasting industry
...Washington sometimes shines a fiery red. "The mysterious red phosphorescence, rarely seen in other blue diamonds, added to the Hope...Working with six other researchers, Mr. Post probed the phosphorescence of the giant diamond, the centerpiece of the National...
4.
The Grizzly That Tried to Eat Me Alive; You're Alone in the Wilderness, Being Remorselessly Stalked by a Ravenous Bear That's Decided YOU'RE Its Next Meal. One Man's Utterly Petrifying Story Of
Newspaper article; The Daily Mail (London, England), August 28, 2010
...loaded the other flare. It skipped off a patch of gravel a few feet in front of the bear and burst into bright phosphorescence. The bear turned and loped away into the trees, looking over its shoulder. But a lope is not a run, and I knew...
5.
The Van Had One Clock Set to NOW. It Was a Lesson in Living Your Life in the Moment; in a Caravan Called the Ark, Dermot Bolger Enountered a Woman Deeply Rich in Spirituality Whose Wisdom Is, Decades on, Helping Him Cope with Grief
Newspaper article; The Mail on Sunday (London, England), August 8, 2010
Subjects: Actors, Actresses
...dog at a caravan door talking happily to a young woman on a bicycle, both of their essences crystallised into a phosphorescence that will forever shine on. INSPIRATION: Sheila Fitzgerald with a young Dermot and, inset below, with her collie...
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encyclopedia articles on: Phosphorescence  - 9 results

       More encyclopedia Results: 1-9 >>  
 
1.
Phosphorescence
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
PHOSPHORESCENCE fos f res ns, luminescence produced...energy or other types of energy. Phosphorescence is distinguished from fluorescence...radiation causing it has ceased. Phosphorescence was first observed in the 17th cent...
2.
Luminescence
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
...fluorescence . If the luminescence continues after the radiation causing it has stopped, then it is known as phosphorescence . The term phosphorescence is often incorrectly considered synonymous with luminescence...
3.
Dinoflagellata
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
...are primary food sources in warmer oceans. Many forms are phosphorescent; they are largely responsible for the phosphorescence visible at night in tropical seas. The phenomenon known as red tide occurs when the rapid reproduction of certain...
4.
Scintillation Counter
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
...of tiny visible flashes produced by the radiation when it strikes a sensitive substance known as a phosphor (see phosphorescence ). Phosphors used in scintillation counters include zinc sulfide, sodium iodide, various liquids, and organic...
5.
Fluorescence
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
...other means. The light is given off only while the stimulation continues; in this the phenomenon differs from phosphorescence , in which light continues to be emitted after the excitation by other radiation has ceased. Fluorescence of certain...
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