| 单词 |
spectrograph |
| 释义 |
ˈspectrograph
[f. as prec. + -graph.]
1. An instrument used for photographing a spectrum. More widely, any apparatus for producing a visual record of a spectrum (optical or otherwise). Cf. mass spectrograph s.v. mass n.2 10 d, sound spectrograph s.v. sound n.3 8.
1884Young in Proc. Amer. Acad. Arts & Sci. 238 In July, 1876, several photographs of the spectrum of Vega were taken with an apparatus which Dr. Draper called the spectrograph. 1889Anthony's Photogr. Bull. II. 394 The color sensitiveness of the plate I find out with the aid of my Quartz spectrograph. 1893Nation 16 Feb. 126/2 With the eleven-inch Draper spectrograph nearly a thousand photographs were taken. 1940Geogr. Jrnl. XCV. 276 My own work was research on the Ozone Layer with a Dobson Spectrograph. 1955Times 15 June 5/5 Such spectrographs are used in laboratories to examine the ions existing in ionized gases, and an American version has been used in rockets. 1967M. Schlauch Language v. 102 There is an instrument called the spectrograph which can record and photograph the complex series of vibrations of the air which convey a sequence of spoken sounds. 1974Encycl. Brit. Macropædia XI. 605/1 The most noteworthy observation made with the parabola spectrograph was the spectrum of rare gases present in the atmosphere... There was a line corresponding to an ion of mass 22 that could not be attributed to any known gas.
2. = spectrogram.
1891Pall Mall G. 26 Sept. 4/2 A few spectrographs of pure and impure blood. 1898Edinb. Rev. Apr. 306 Rich harvests of photographs and spectrographs were garnered.
Hence specˈtrographer, one who uses a spectrograph; spectroˈgraphic a., relating to a spectrograph or the observations made with it; spectroˈgraphically adv., in a spectrographic manner; specˈtrography, the art of using the spectrograph.
1884Science III. 727/1 Spectrographic operations are..much more sensitive to atmospheric conditions than are visual observations. 1900Edinb. Rev. Apr. 458 ‘Spectro⁓graphy’ is the complement of spectroscopy. Ibid. 460 The spectrographic impression of a hydrogen star. Ibid. 474 Having spectrographically surveyed the entire heaven. 1903A. M. Clerke Probl. Astrophys. 3 Spectroscopic photography, or ‘spectrography’ dates from Sir William Huggins's adoption of the dry gelatine process in 1876. 1946Nature 20 July 79/1 The result of this selection is a volume from which spectrographers may derive helpful guidance in the correct choice of analytical methods. 1959E. Pulgram Introd. Spectrography of Speech i. 20 The position, which I have at least in part adopted in consequence of learning to view language spectrographically. Ibid. ii. 27 The experimental linguist.., like the spectrographer of speech, is interested in the cultural and the physical values of the phenomena at the same time. 1962Amer. Speech XXXVII. 62 Phonemic analysis of the stress-intonation system based on spectrographic analysis of a specific corpus. 1974Sci. Amer. Mar. 86/3 Another promising diagnostic technique for detecting abnormalities in infants, in addition to the spectrographic analysis of the cry, is the measurement of..changes in brain waves in response to sounds. 1981Amer. Speech 1977 LII. 269 A carefully developed argument, supported with spectrographic evidence.
Add: spectroˈgraphical a. = spectrographic adj.
1968Nuclear Instruments & Methods LXV. 253 It has been emphasized that the spectrometer is also suited for spectrographical use with multi-detectors. 1982Acta Physiol. Scand. CXVI. 67 Spectrographical scanning of LMW-Zn preparations obtained by gel chromatography..gave identical absorption curves with those obtained by scanning of a zinc-citrate solution. |
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