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monochromatic, a.|mɒnəkrəʊˈmætɪk|
[f. Gr. µόνο-ς mono- + χρωµατικός chromatic (f. χρῶµα colour); Gr. has µονοχρώµατος of one colour.]
1. Of or presenting one colour only; applied spec. to light of one wave-length. Also applied to other radiation that is (nominally) of a single wavelength or energy throughout.
monochromatic lamp, a lamp which produces such a light.
1822Brewster in Trans. Roy. Soc. Edin. IX. 437 The Monochromatic Lamp being thus completed, I lost no time in applying it to the illumination of Microscopic objects. 1827Q. Jrnl. Sci. XXII. 374 Talbot on Monochromatic Light. 1854De Quincey Autob. Sk. i. §2 Wks. 1854 II. 36 note, Porphyry is far from being so monochromatic as Gibbon's argument would presume. 1854Pereira's Polarized Light (ed. 2) 27 The component prismatic colours are simple or homogeneous lights. Each of these may be termed a monochromatic light. 1874T. Hardy Far from Madding Crowd II. iii. 30 Under a monochromatic Lammas sky. 1923Glazebrook Dict. Appl. Physics IV. 22/2 The crystal is pulverised and the powder compressed into a rod, placed in the axis of a cylindrical photographic film and subjected to ‘monochromatic’ X-rays. 1955C. R. N. Strouts et al. Analytical Chem. II. xxvi. 942 It is desirable to use essentially monochromatic radiation for most analytical applications of X-ray diffraction. 1967R. Castaing et al. in A. Septier Focusing Charged Particles II. iv. 289 An incident monochromatic electron beam.
2. a. Executed in monochrome.
1823J. Badcock Dom. Amusem. 52 Mr. Gilpin's mode of monochromatic painting and printing. 1828Edin. Rev. Sept. 75 The Monochromatic works were highly esteemed. 1879O. N. Rood Chromatics xviii. 310 In monochromatic designs the small interval is very frequently employed.
b. n. pl. = studies in monochrome.
1893Athenæum 27 May 676/2 There are examples of all sorts of styles..[including] the monochromatics and subtle tone-studies of Mr. Whistler.
3. Ophthalm. Exhibiting or affected with monochromatism (sense b); completely colour-blind.
1902J. M. Baldwin Dict. Philos. & Psychol. II. 793/2 The sensations of those individuals whom they named ‘monochromatic’..were dogmatically affirmed to be vision under the form of red or blue or green, it was uncertain which. 1956Brit. Jrnl. Ophthalm. XL. 470 His vision is monochromatic when examined in the colour apparatus. 1974Sci. Amer. Dec. 25/3 The ophthalmologist testified that the witness was actually monochromatic, which meant he could perceive no colors at all.
Hence monochroˈmatically adv., also fig.; monochromaˈticity, the condition of being monochromatic; the extent to which any radiation is concentrated at one wavelength or frequency; † monoˈchromatist, a painter in monochrome.
1784J. Barry in Lect. Paint. i. (1848) 81 The old method of those they called monochromatists. 1880W. Severn in Macm. Mag. No. 245. 376 Nothing is more puzzling to beginners than to determine between two very opposite colours as to which is the darkest in tone, or, to use a long word monochromatically. 1890Anthony's Photogr. Bull. III. 408 For development, a monochromatically lighted room is still a necessity. 1960S. Tolansky Surface Microtopography i. 5 For two-beam work the Wratten 77A didymium glass filter gives excellent monochromaticity. 1963G. Troup Masers & Lasers (ed. 2) vii. 113 The advantages of maser optical sources are: the extreme monochromaticity, resulting in huge spectral energy-densities; [etc.]. 1972Daily Tel. 31 May 10/3 Janacek's Sonata ‘1905’..was massively though rather monochromatically delivered. 1972Nature 22 Dec. 483/1 The intensity, coherence and monochromaticity of laser light have made it an ideal radiation source for selective alteration of cell organelles. |