| 单词 |
fluorometer |
| 释义 |
fluorometer|fluːəˈrɒmɪtə(r)|
[f. fluoro- + -meter.]
1. A device used to aid in the fluoroscopic location of one object within another.
1897N.Y. Tribune 9 Feb. 3/4 In a series of scientific experiments with the new fluorometer, invented by John Dennis of this city [sc. Rochester], Professor A. L. Arey demonstrated definitely the angles and direction of the Roentgen rays with regard to their source. 1898Sci. Amer. 12 Feb. 101/1 It is the province of the ‘fluorometer’ to enable observers to form an exact and certain diagnosis of the presence of bullets, needles, calculi or any other substance which is comparatively more dense in its fluoroscopic shadow than the subject in which it is contained. 1899D. Walsh Röntgen Rays in Med. Work (ed. 2) 97 In America the ‘Dennis Fluorometer’ is in vogue.
2. Also fluorimeter. Any apparatus or instrument for measuring the intensity of fluorescence or the duration of its afterglow. Hence fluoro-, fluoriˈmetric adjs., of, pertaining to, or employing the fluorometer or fluorometry; fluoro-, fluoriˈmetrically advs.; fluoˈro-, fluoˈrimetry, the use of the fluorometer.
1913Chem. Abstr. VII. 2905 The instrument described, termed a fluorometer. 1918Ibid. XII. 450 (heading) New fluorometric apparatus for the determination of X-rays. 1920Ibid. XIV. 2584 (heading) A fluorimeter. 1920Jrnl. Amer. Chem. Soc. XLII. 1351 The natural term to designate the new method could be either ‘fluorometry’ or ‘fluoremetry’ [sic]. 1942Electronic Engin. XV. 127 A supersonic cell fluorometer..for the measurement of the rise and decay of luminescence in phosphors. 1953Bowen & Wokes Fluorescence of Solutions viii. 58 The term ‘fluorimeter’..is now generally accepted in Great Britain. Alternative terms such as ‘fluorometer’ and ‘fluorophotometer’ are in use in America. 1961Lancet 7 Oct. 793/1 The urine was..estimated fluorimetrically. 1962T. O. Sippel in A. Pirie Lens Metabolism in Rel. Cataract 368 The oxidized and reduced forms of diphospho- and triphosphopyridine nucleotide were measured fluorometrically. Ibid., Readings were made on a photomultiplier fluorometer. |
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