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actinism
actinism (ˈæktɪnɪz(ə)m) [f. Gr. ἀκτῖν- ray + -ism.] † 1. ‘The radiation of heat or light, or that branch of Philosophy which treats of it.’ Craig 1847. Obs. 2. That property or force in the sun's rays by which chemical changes are produced, as in photography.1844 R. Hunt Brit. Assoc. Report 30 By a ...
Oxford English Dictionary
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Actinism
Actinism () is the property of solar radiation that leads to the production of photochemical and photobiological effects. Actinism is derived from the Ancient Greek ἀκτίς, ἀκτῖνος ("ray, beam").
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actinism
actinism/ˈæktɪnɪzəm; `æktɪnˌɪzəm/ n[U]property of short-wave radiation that produces chemical changes, as in photography 光化性(光波的辐射性能, 可产生化学变化, 如摄影术中者).
牛津英汉双解词典
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actino-
actino- a. Gr. ἀκτῑνο- combining form of ἀκτίς (gen. ἀκτῖν-ος) a ray, a beam, as in ἀκτῑνοβόλος darting rays. Entering into numerous derivatives, chiefly connected (1) with actinism, (2) with animals related to the Actinia. actinodermatitis, dermatitis arising from the action of actinic rays; actino...
Oxford English Dictionary
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tithonic
† tithonic, a. Obs. (taɪθ-, tɪˈθɒnɪk) [Fancifully f. Gr. τῑθων-ός, spouse of Eos (Aurora) + -ic.] Pertaining to or characterized by ‘tithonism’; = actinic. Hence † tithoˈnicity Obs. = actinism 2.1842 Draper in Philos. Mag. (Dec.) XXI. 455 Such words as Tithonoscope, Tithonometer, Tithonography, Tith...
Oxford English Dictionary
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actinic
actinic, a. (ækˈtɪnɪk) [f. Gr. ἀκτῖν- ray + -ic.] Of or pertaining to actinism.1844 Sir J. Herschel Brit. Assoc. Report 13 While the actinic influence is still fresh upon the face (i.e. as soon as it is removed from the light). 1845 Pen. Cycl. I. 167/2 A beam of solar light is made up of three disti...
Oxford English Dictionary
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Index of physics articles (A)
Crystallographica F
Acta Materialia
Acta Physica Polonica
Acta Physica Polonica A
Acta Physica Polonica B
Actinic light
Actinide
Actinides in the environment
Actinism
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actino-chemistry
ˈactino-ˈchemistry [See actino-.] The chemistry of actinism; that branch of chemistry, which treats of the chemical energies existing in the solar rays.1844 Sir J. Herschel Brit. Assoc. Report 12, A contribution to the newly created science of actino-chemistry. 1853 R. Hunt Man. Photog. 116 Proceedi...
Oxford English Dictionary
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diactinic
diactinic, a. Optics. (daɪækˈtɪnɪk) [f. di-3 = dia-1 +Gr. ἀκτίν- a ray + -ic.] Having the property of transmitting the actinic rays of light.1867 W. A. Miller Elemen. Chem. i. (ed. 4) 230 Rock-salt, fluor-spar, water..are almost as diactinic..as quartz. 1880 19th Cent. Mar. 529 Substances which are ...
Oxford English Dictionary
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List of vacuum tubes
– 250 Apk Gas-filled, cold-cathode tetrode thyratron, differential trigger electrodes, Octal base, for use as a whitish stroboscope lamp with a high actinism
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tithonism
† ˈtithonism Obs. [f. as prec. + -ism.] = tithonicity, actinism 2. So † ˈtithonize v., trans. to subject to actinic influence (hence † tithoniˈzation, ‘tithonic’ or actinic action; ˈtithonized ppl. a.); † tiˈthonograph, a photograph produced by the action of ‘tithonic’ rays on a sensitized surface (...
Oxford English Dictionary
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agent
▪ I. agent, ppl. a. and n. (ˈeɪdʒənt) [ad. L. agens, agentem, acting, pr. pple. of ag-ĕre to act, do.] A. adj. Acting, exerting power, as opposed to patient. arch.1620 Melton Astrolog. 13 What a hot fellow Sol (whom all Agent Causes follow). 1678 Cudworth Intellect. Syst. 55 Aristotle..making it [mi...
Oxford English Dictionary
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