Results 221 to 230 of about 243,053 (268)
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Colour and colour change in the grasshopper, Kosciuscola tristis
Journal of Insect Physiology, 1975Abstract The males of the small grasshopper (Kosciuscola tristis), with a restricted range above 1830 m in the Australian Alps, exhibit a remarkable colour change. They are dark, almost black, when cold and change to a bright sky blue colour within minutes of exposure to warmth.
B.K. Filshie, M.F. Day, E.H. Mercer
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A System for Finding Changes in Colour
Procedings of the Alvey Vision Conference 1987, 1987We acquire a great deal of information about the world about us by perceiving the colour of objects. We can manage without colour, but certain tasks can become rather difficult telling ripe from unripe fruits, or finding green tennis balls lost in grass, for example. Yet colour information is seldom used by the machine vision community, although, given
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Serotonin and Change of Colour in Frogs
Nature, 1959IT is well known that intermedin, a secretion of the pituitary, is responsible for the dispersion of the pigment in the melanocytes of frogs. The identity of the secretion has remained a mystery; indeed, there are few compounds capable of causing the darkening of hypophysectomized frogs.
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Changing cable identification colours
First IEE International Conference on Building Electrical Technology (BETNET), 2004As from 1st April 2004, electrical installations in the U.K. may use, for fixed wirings, the new harmonised cable core colours or the pre-existing colours but not both. However, BS7671:2001 (incorporating Amendments 1 & 2) requires any work commencing on site after 31 March 2006 should not use the old colours but to comply with the new colours in full.
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Conditions of the Colour Change of Prodigiosin
Nature, 1967THERE have been several reports that prodigiosin, the pigment produced by Serratia marcescens, is red in acid solution with an absorption maximum at 535–540 mμ but is yellow–orange in alkaline solution with an absorption maximum at 470 mμ. (refs. 1 and 2).
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Changes of colour appearance due to changes of shape of colour sample and background colour
Background is one of the important factors that affect colour appearance of samples. In general, a background colour induces colour appearance of a sample to shift towards the complementary colour of the background. For example, grey on black background appears lighter than the same grey on white background. Shape of colour sample is also a factor thatopenaire +1 more source
Planetary and Space Science, 1980
Abstract An analysis of four-colour photographic images of Jupiter taken during 1970–1974 is presented. It is shown that major global and hemispheric changes in colour—mainly in the blue— occurred over this period.
G.C. Browne, A.I. Meadows
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Abstract An analysis of four-colour photographic images of Jupiter taken during 1970–1974 is presented. It is shown that major global and hemispheric changes in colour—mainly in the blue— occurred over this period.
G.C. Browne, A.I. Meadows
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Nature, 1964
The Control of Chromatophores (International Series of Monographs on Pure and Applied Biology: Zoology, No. 14.) By M. Fingerman. Pp. ix + 184. (Oxford, London, New York and Paris: Pergamon Press, 1963.) 50s.
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The Control of Chromatophores (International Series of Monographs on Pure and Applied Biology: Zoology, No. 14.) By M. Fingerman. Pp. ix + 184. (Oxford, London, New York and Paris: Pergamon Press, 1963.) 50s.
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