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北京石油化工学院2026年研究生招生接收调剂公告
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piao_19850

木虫 (著名写手)

[求助] 求助一段汉译英,多谢

这个椭圆的长短轴总在x,y方向,x,y方向恰好是1/4波片的快慢轴方向,因此,从1/4波片出射的光为线偏振光,其偏振方向与y轴夹角为。因此要把检偏镜从正交位置转过角就可使输出极小,这个角称为消光角,该角可由检偏器检测,双折射梯度ΔR可由下式表达:

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piao_19850

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引用回帖:
2楼: Originally posted by BruceG at 2012-06-23 10:42:40
the major and short axis of this ellipse are always the x,y directions, which
exactly are directions of fast and slow axis of

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3楼2012-06-23 14:34:03
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BruceG

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snail&eagle

【答案】应助回帖


爱与雨下: 金币+1 2012-06-24 21:21:02
the major and short axis of this ellipse are always the x,y directions, which
exactly are directions of fast and slow axis of
2楼2012-06-23 10:42:40
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keami5210

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【答案】应助回帖

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piao_19850: 金币+50, 翻译EPI+1, ★★★★★最佳答案, 非常感谢你 2012-06-26 12:43:30
the major and minor axis of this ellipse are always in the x,y directions,which are exactly the fast and slow directions of a quarter of wave plate,consequently,emergent light  from a quarter of wave plate is linearly polarized light,the included angle between its polarization direction and y axis is 口。Hence,turning analyzer 口 form orthogonal position can minimize the output, this angle is extinction angle,which can be detected by analyzer,birefringence gradient ΔR is calculated by following equation:
4楼2012-06-26 11:54:48
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