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维基
百科
光程差 [guāng chéng chā]
[光] optical path difference (OPD)
retardation
retardation
- 有了补偿板之后，任何光程差都只由实际程差引起。
With the compensator in place any optical path difference arises from the actual path difference. - 补偿板的转动会引起光程差的变化，产生干涉条纹数目的变化。
The rotation of Compensator can cause the change of optical pathlength, and the number of interference fringes will change simultaneously. - 当两束光重遇后将发生干涉，并形成一个依赖于两条光路光程差的图样。
When the two light beams recombine, they interfere and form a pattern that depends on the difference between the distances they traveled.
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