| 单词 | lavender rays |
| 释义 | > as lemmaslavender rays ΘΚΠ the world > matter > physics > electromagnetic radiation > light > chromatism > [noun] > spectrum > light or rays beyond lavender rays1840 obscure rays1849 black light1896 1840 J. F. W. Herschel in Philos. Trans. (Royal Soc.) 130 20 As orange, indigo, and violet, vegetable tints, are used for those of the prismatic hues, I may be allowed to express by the epithet lavender the rays which produce the tint in question, rather for the purpose of abbreviating the uncouth appellation of ultra-violet..than for that of laying any undue stress on the observed fact. 1842 Philos. Trans. (Royal Soc.) 132 191 If the action of the spectrum be prolonged, a much feebler whitening becomes sensible in the red, and a trace of it also beyond the violet into the ‘lavender’ rays. 1858 T. Sutton & J. Worden Dict. Photogr. 248 The faintly luminous rays beyond the violet end of the spectrum are called ‘lavender rays’. 1897 E. J. Wall Dict. Photogr. (ed. 7) 383 Lavender Rays, the faintly luminous rays at the extreme end of the visible spectrum are sometimes so called. 1911 Cassell's Cycl. Photogr. 329/2 Lavender rays, a term (now practically obsolete) applied to the commencement of the ultraviolet rays just beyond the visible violet. 1922 A. E. H. Tutton Crystallogr. II. li. 1139 This ultra-violet lamp is visible to the eye at close quarters owing to fluorescence of the retina of the eye itself; and the field of vision appears filled with a haze known as ‘lavender fog’, owing to fluorescence of the crystalline lens of the eye.] < as lemmas |
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