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单词 Nicol prism
释义

Nicol prism

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[光]尼科耳棱镜
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    square-end nicol prism 方头尼科正棱镜
    nicol prism nicol 尼科耳棱镜
    crossed Nicol's prism 正交尼科耳凌镜
Nicol prism [光] 尼科耳棱镜
英语百科

Nicol prism

A Nicol prism

A Nicol prism is a type of polarizer, an optical device used to produce a polarized beam of light from an unpolarized beam. It is made in such a way that it eliminates one of the rays by Total Internal Reflection i.e, the O-ray is eliminated and only the E-ray is transmitted through the prism. See polarized light. It was the first type of polarizing prism to be invented, in 1828 by William Nicol (1770–1851) of Edinburgh. It consists of a rhombohedral crystal of Iceland spar (a variety of calcite) that has been cut at an angle of 68° with respect to the crystal axis, cut again diagonally, and then rejoined as shown using, as a glue, a layer of transparent Canada balsam.

近义、反义、联想词
近义词
n.
optical device

英英词典
nicol prism n.
  1. optical device that produces plane-polarized light
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