fluorescent

[Eng. fluor; -escent.] Having the quality of fluorescence; pertaining to fluor fluorescent-screen, s. A screen made of cardboard, aluminum, or other substance that can easily be penetrated by the X-rays, - the inner side of which is coated with tungstate of calcium or other fluorescent crystals, used in making fluoroscopic examinations which become luminous under the influence of the X-rays [ROENTGEN RAYS] and give shadow pictures of objects that obstruct the rays. pine, pit, sire, sir, marine; gō, põt, combines readily with silicon and metals, there- fore it attacks the tube in which the experiment is performed; it decomposes water, forming hydro- finoric acid, HF. Experiments with the action of chlorine on AgF in tubes made of CaF2, yielded HF, as the silver fluoride could not be sufficiently dried. Fluorine does not combine with oxygen. IMG:content-1816.png:[blocks in formation] "Thomas A. Edison is about to give to the world another which he put the X-rays to practical use in revea!- ing the bony structure of the body."-Chicago Tribune, Feb. 8, 1897. flû-or-o-scop'-ic, a . Of or pertaining to a fluoro- scope; performed by the aid of a fluoroscope. flu-or-o-type, s. [Eng. fluor; o connective, and Eng. type .] Photog.: A proce into which fluoric acid enters in the shape of fluorate of soda. fiû-or-ous, a. [Lat. fluor , and Eng., ., suff. -ous .] Min., .: Containing fluorite. flû-ō-sil-1-cate, s. [HYDROFLUOSILICATE.] fiû-ō-sil-Iç'-Ic, a. [Pref. fluo- , and Eng. silicic .] [HYDROFLUOSILICIC.] flŭr-ry, s . [Etymology doubtful; probably of Scand in avian origin; cf. Norweg. dial. fluralt = rough, shaggy; Sw. dial. flur =disordered hair, a whim, a caprice; flurig =disordered, di olute.] *1. A sudden gust, blast, or storm of wind; a squall. 2. A sudden and violent shower of snow or rain. 3. Agitation, bustle, confusion; nervous excite- ment. 4. (Spec.): When a whale which has received a fatal wound rises to the surface, spouts blood, and lashes the sea with its tail, it is said to be in its flurry. flush (1), v. i . & t . [Sw. dial. flo a =to burn fur i ously; Norweg. dial. flosa =pa ion, vehemence, eagerne . ( Skeat .)] A. Intransitive : 6. A flock of birds suddenly started or flushed. "Flowne at a flush of ducks foreby the brooke." Spenser: F. Q., V. ii. 54. IMG:content-1817.png:[blocks in formation] IMG:content-1818.png:[blocks in formation] flushing