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piao_19850木蟲 (著名寫手)
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[求助]
求助一段漢譯英,多謝
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| 這個橢圓的長短軸總在x,y方向,x,y方向恰好是1/4波片的快慢軸方向,因此,從1/4波片出射的光為線偏振光,其偏振方向與y軸夾角為。因此要把檢偏鏡從正交位置轉(zhuǎn)過角就可使輸出極小,這個角稱為消光角,該角可由檢偏器檢測,雙折射梯度ΔR可由下式表達: |
語言學習 |
木蟲 (著名寫手)
snail&eagle
木蟲 (著名寫手)
| 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: |
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