| 单词 | vanishing plane |
| 释义 | > as lemmasvanishing plane 2. vanishing point: in perspective, the point in which receding parallel lines, if continued, appear to meet; also figurative. Similarly vanishing line, vanishing plane. ΘΚΠ the world > matter > physics > electromagnetic radiation > light > emission of light, radiation > [noun] > vanishing point vanishing point1797 vanishing line1840 vanishing plane1840 the world > relative properties > number > mathematical number or quantity > [noun] > zero > point of non-existence vanishing point1913 1797 Encycl. Brit. XIV. 183/2 Produce CB..and draw PV parallel to it... V is its vanishing point. 1815 J. Smith Panorama Sci. & Art II. 711 Distance of a vanishing point, is the distance from the vanishing point on the picture to the eye of the spectator. 1840 Penny Cycl. XVII. 493 A plane W, which will be termed the vanishing plane of the original one. 1840 Penny Cycl. XVII. 493 The vanishing line and parallel of the vertex. 1851 J. Ruskin Arrows of Chace (1880) I. 90 In Millais' ‘Mariana’..the top of the green curtain in the distant window has too low a vanishing-point. 1885 C. Leudesdorf tr. L. Cremona Elements Projective Geom. 5 The point I′, the image of the point at infinity I, is called the vanishing point of a′. 1885 C. Leudesdorf tr. L. Cremona Elements Projective Geom. 21 In every plane σ passing through O lies a vanishing line i′, which is the image of the point at infinity in the same plane. 1885 C. Leudesdorf tr. L. Cremona Elements Projective Geom. 21 This plane ϕ′, which may be called the vanishing plane. 1913 Times 7 Aug. 8/2 The danger of operation, gas operation, is retreating to a vanishing point. 1963 Lancet 12 Jan. 96/2 Routine application of this test reduces to vanishing-point the mortality from air embolism during neurosurgery in the sitting position. < as lemmas |
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