achromatic
81achromaticlens — achromatic lens n. A combination of lenses made of different glass, used to produce images free of chromatic aberrations. * * * …
82АХРОМАТИЧНЫЙ — (achromatic) бесцветный …
83ЛИНЗЫ АХРОМАТИЧЕСКИЕ — (achromatic lenses) специальные линзы, предназначенные для использования в окулярах микроскопов и других научных приборах. Они позволяют получить четкое изображение, не затуманенное цветными разводами, наблюдающимися при использовании обычных… …
84Variations of gray — Main article: Gray shades of gray redirects here. For other uses, see shades of gray (disambiguation). There are many tints and shades of the color gray. A selection of these various colors are shown below. Gray/Grey …
85Complete coloring — of the Clebsch graph with 8 colors. Every pair of colors appears on at least one edge. No complete coloring with more colors exists: in any 9 coloring some color would appear only at one vertex, and there would not be enough neighboring vertices… …
86History of the telescope — The earliest known working telescopes appeared in 1608 and are credited to Hans Lippershey and Zacharias Janssen, spectacle makers in Middelburg, and Jacob Metius of Alkmaar. The design of these early refracting telescopes consisted of a convex… …
87Abney effect — The Abney effect describes the perceived hue shift that occurs when white light is added to a monochromatic light source. [Pridmore, R. “Effect of purity on hue (Abney effect) in various conditions.” Color Research and Application. 32.1 (2007):… …
88John Dollond — Born 21 June 1706(1706 06 21) …
89Condenser (microscope) — A condenser is one of the main components of the optical system of many transmitted light compound microscopes. A condenser is a lens that serves to concentrate light from the illumination source that is in turn focused through the object and… …
90colour — /kul euhr/, n., adj. v.t., v.i. Chiefly Brit. color. Usage. See or1. * * * I Aspect of any object that may be described in terms of hue, brightness, and saturation. It is associated with the visible wavelengths of electromagnetic radiation, which …
