单词 | spectrometer |
释义 | spectrometern. An instrument used for measuring the index of refraction. Now in extended use, any of a wide range of instruments for producing spectra and measuring the positions, etc., of spectral features. Cf. mass spectrometer n. ΘΚΠ the world > matter > colour > science of colour > [noun] > measuring instruments metrochrome1817 colorimeter1844 spectrometer1874 Tintometer1889 the world > matter > physics > atomic physics > decomposition of light, spectrum > study of spectra > [noun] > instrument used in spectroscope1861 spectrometer1874 spectrophotometer1881 spectrograph1884 integrating spectroscope1898 X-ray spectrometer1914 milliprobe1963 the world > matter > physics > electromagnetic radiation > light > chromatism > [noun] > spectrum > instrument prism1612 spectrometer1874 spectrograph1884 the world > matter > physics > electromagnetic radiation > light > refraction > [noun] > index of refraction > measurement of indices > instrument for spectrometer1874 reflectometer1879 transmissometer1955 1874 tr. E. Lommel Nature of Light (ed. 4) 144 The determination of the index of refraction can be much more conveniently effected by means of Meyerstein's Spectrometer. 1878 Smithsonian Rep. 431 The spectrometer stands upon a plate of metal which can be made to revolve so that measurements by repetitions are practicable. 1883 Knowledge 18 May 297/1 Professor Clifton of Oxford has brought out a new spectrometer. 1901 Sci. Abstr.: Physics & Electr. Engin. 4 930 Universal spectrometer... This instrument can be used for studying any portion of the spectrum, either visually, photographically, or photometrically, with two different dispersions. 1950 Sci. News 15 19 Monochromatic light of chosen wavelength, from a spectrometer, is now used in order to stimulate the retinal receptors. 1958 Antiquity 32 124 The characteristics of the trace-elements present are detected by a special Gamma-ray Spectrometer. 1978 P. W. Atkins Physical Chem. xix. 616 The centre of the e.s.r. spectrum of the methyl radical occurs at 329·4 mT when the spectrometer is using 9·233 GHz microwaves. Derivatives [Compare French spectrométrique, -métrie (Littré).] spectroˈmetric adj. ΘΚΠ the world > matter > colour > science of colour > [adjective] > measuring instruments colorimetric1844 colorimetrical1854 spectrometric1891 Tintometric1901 the world > matter > physics > atomic physics > decomposition of light, spectrum > study of spectra > [adjective] spectroscopic1869 spectrographic1884 spectrophotometric1884 spectrometric1891 the world > matter > physics > electromagnetic radiation > light > refraction > [adjective] > concerned with measurement spectrometric1891 refractometric1893 the world > matter > physics > electromagnetic radiation > light > chromatism > [adjective] > of or relating to the spectroscope spectroscopic1869 spectrographic1884 spectrometric1891 1891 Cent. Dict. Spectrometric. 1903 A. M. Clerke Probl. Astrophysics 8 The ‘spectrometric’ division of photometry consists in the comparative estimation of ray-intensities. 1962 Oxf. Univ. Gaz. 9 Mar. 775/2 Continuing his research on the history of British Bronze Age metallurgy, he completed a programme of spectrometric analyses of Early Bronze Age material. spectroˈmetrically adv. ΘΚΠ the world > matter > chemistry > chemical assay or analytical chemistry > [adverb] > by process of specific types of chemical analysis > by means of spectrometry spectrometrically1953 the world > matter > physics > atomic physics > decomposition of light, spectrum > study of spectra > [adverb] spectrophotometrically1897 spectrographically1900 spectrometrically1953 1953 G. P. Barnard Mod. Mass Spectrometry 286 A different method was used..to determine the half-life of 85Kr mass spectrometrically. 1954 Powell & Ross in Appl. Mass Spectrometry (Inst. Petroleum) 7 In Raman spectrometry, the material is irradiated with monochromatic light..and the light scattered at right angles to the incident beam is examined spectrometrically. 1971 Nature 27 Aug. 646/2 Some 3,3-diaryl oxetanes which could not be isolated but only detected spectrometrically in solution. specˈtrometrist n. an expert in spectrometry; a person employed to operate a spectrometer. ΘΚΠ the world > matter > chemistry > chemical assay or analytical chemistry > [noun] > acetimetry > spectrometry > analyst spectrometrist1958 the world > matter > physics > atomic physics > decomposition of light, spectrum > study of spectra > [noun] > person involved in spectroscopist1866 spectrographer1946 spectrometrist1958 1958 Antiquity 32 124 The staff consists now of two Senior Scientific Officers, two Research Assistants, three technicians, a secretary and two part-time workers (optical spectrometrist and statistician). 1973 Physics Bull. Feb. 108/1 The term chemi-ionization has unfortunately taken on a different meaning amongst mass spectrometrists. specˈtrometry n. ΘΚΠ the world > matter > chemistry > chemical assay or analytical chemistry > [noun] > acetimetry > spectrometry spectrometry1902 the world > matter > physics > atomic physics > decomposition of light, spectrum > study of spectra > [noun] spectrology1862 spectroscopy1870 spectrophotometry1899 spectrometry1902 the world > matter > physics > atomic physics > decomposition of light, spectrum > study of spectra > types of spectrometry or spectroscopy > [noun] > analysis of mass spectrometry1902 mass spectroscopy1926 mass spectrometry1948 1902 Webster's Internat. Dict. Eng. Lang. Suppl. Spectrometry. 1948 Physical Rev. 74 1222/1 By extending the method..a higher order mass resolution is obtained which is generally usable in the mass spectrometry of positive ions. 1954 Powell & Ross in Appl. Mass Spectrometry (Inst. Petroleum) 7 In Raman spectrometry, the material is irradiated with monochromatic light..and the light scattered at right angles to the incident beam is examined spectrometrically. 1958 Antiquity 32 124 In Optical Spectrometry, a programme of analysis of prehistoric European bronzes..is being carried out. 1975 McGraw-Hill Yearbk. Sci. & Technol. 193/1 Flame spectrometry, traditionally a single-element technique, has been advanced recently to include multielement analysis. This entry has not yet been fully updated (first published 1913; most recently modified version published online June 2019). < n.1874 |
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