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| | fluoresce | (v) exhibit or undergo fluorescence | | fluorescein | (n) a yellow dye that is visible even when highly diluted; used as an absorption indicator when silver nitrate solution is added to sodium chloride in order to precipitate silver chloride (turns pink when no chloride ions are left in solution and negative fluorescein ions are then absorbed), Syn. resorcinolphthalein, fluorescent dye, fluoresceine | | fluorescence | (n) light emitted during absorption of radiation of some other (invisible) wavelength | | fluorescent | (n) a lighting fixture that uses a fluorescent lamp, Syn. fluorescent fixture | | fluorescent | (adj) emitting light during exposure to radiation from an external source | | fluorescent | (adj) brilliantly colored and apparently giving off light |
| | fluorescein | n. (Chem.) A yellowish red, crystalline substance, C20H12O5, produced by heating together phthalic anhydride and resorcin; -- so called, from the very brilliant yellowish green fluorescence of its alkaline solutions. It has acid properties, and its salts of the alkalies are known to the trade under the name of uranin.
Syn. -- fluorescein, fluorescent dye, resorcinolphthalein. [ 1913 Webster ] Variants: fluoresceine | | Fluorescence | n. [ From Fluor. ] (Chemistry, Optics) A luminescence emitted by certain substances due to the absorption of radiation at one wavelength, and the almost instantaneous re-emission of radiation at another, usually longer wavelength. The re-radiation stops almost as soon as the incident radiation is halted, thus distinguishing this phenomenon from phosphorescence, in which re-radiation of light may continue for some time after the incident radiation is halted. The color of the radiated light typically differs from the apparent color of the material, as when green crystals of fluor spar afford blue reflections. It is due not to the difference in the color of a distinct surface layer, but to the power which the substance has of modifying the light incident upon it, by first absorbing the light to achieve an excited state, and then radiating light to resume the ground energy level. The light emitted by fluorescent substances is in general of longer wavelength than the incident light. The radiation can also be induced by ionizing radiation which is not electromagnetic, such as alpha or beta rays, and cathode rays. This property is possessed by fluorspar, uranium glass, sulphide of calcium, and many other substances. It finds use in analytical instruments to detect or measure radiation, and in some commercial applications. [ 1913 Webster +PJC ] | | Fluorescent | a. Having the property of fluorescence. [ 1913 Webster ] |
| | The flickers on the-- Fluorescent lights were flickering. | พอดีชั้น 16 หลอดไฟมันวูบ ๆ Nothing to Lose (1997) | | The best thing to throw... is a fluorescent light bulb. | สิ่งที่ดีที่สุดคือการขว้าง หลอดไฟ Art of Fighting (2006) | | It's fluorescent, so different from other materials. | มันเรืองแสง ซึ่งแตกต่างจากของอย่างอื่น Spider Lilies (2007) | | Yeah, I know, it's the... It's the fluorescents. | ใช่, ผมรู้, มัน... Twilight (2008) | | That rosin will fluoresce under ultraviolet light. | ถ้าเขาจับมีด มันจะอยู่บนมีดด้วย Raging Cannibal (2008) | | If I can get even a whisper of a print to fluoresce... | "94.09% ตรงกัน" Raging Cannibal (2008) | | Well, I always thought it was cool that teeth fluoresced, but veneers didn't | ผมมักคิดว่ามันดีจังที่ฟันเรืองแสงได้\ แต่พวกสารเคลือบฟันไม่เป็นอย่างนั้น Art Imitates Life (2008) | | Fluorescent lighting, communal showers, | หลอดไฟฟลูออเรสเซ้น ห้องอาบน้ำรวม และ The Freshmen (2009) | | My favorite color is fluorescent beige and my ambition is to have my own record layer. | สีที่ชอบคือสีเบจจ์ฟลูออเรสเซนต์ ความใฝ่ฝันของฉันคือ\ มีเพลงเป็นของตัวเอง Precious (2009) | | Fluorescent bulbs exploded afterward, shattering over the polystyrene. | หลอดไฟฟูออเรสเซนท์ระเบิด หลังจากนั้น แตกละเลียดอยู่บนพลาสติก โพลีเอสเตอรีน The Witch in the Wardrobe (2010) | | Invisible ink fluoresces under UV. | หมึกล่องหนจะเรืองแสง ภายใต้แสงยูวี Fallen (2010) | | You know fluorescent lights flicker at the same frequency as the human brain? | กระพริบด้วยความถี่เดียวกับ สมองของมนุษย์น่ะ Now What? (2010) |
| | | | | | 蛍光;螢光 | [けいこう, keikou] (n, adj-no) fluorescence #14,079 [Add to Longdo] | | サークライン | [sa-kurain] (n) circular fluorescent lamp (Circuline) [Add to Longdo] | | 官求品 | [かんきゅうひん, kankyuuhin] (n) fluorescent light bulb [Add to Longdo] | | 蛍光管 | [けいこうかん, keikoukan] (n) (See 真空蛍光管) fluorescent tube [Add to Longdo] | | 蛍光色 | [けいこうしょく, keikoushoku] (n, adj-no) fluorescent color; fluorescent colour [Add to Longdo] | | 蛍光体 | [けいこうたい, keikoutai] (n) (See 蛍光物質) fluorescent substance [Add to Longdo] | | 蛍光塗料 | [けいこうとりょう, keikoutoryou] (n) fluorescent paint [Add to Longdo] | | 蛍光灯(P);蛍光燈(oK);螢光灯(oK);螢光燈(oK) | [けいこうとう, keikoutou] (n) (1) fluorescent lamp; fluorescent light; (2) person who is slow to react; someone slow on the uptake; (P) [Add to Longdo] | | 蛍光板 | [けいこうばん, keikouban] (n) fluorescent screen [Add to Longdo] | | 蛍光物質 | [けいこうぶっしつ, keikoubusshitsu] (n) (See 蛍光体) fluorescent substance; phosphor [Add to Longdo] |
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