The "stauroscope", an optical instrument for studying the crystal structure of minerals under polarized light, is also no longer used.

一种用来研究偏振光下矿物的晶体结构的光学仪器，也不再被使用。

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So, the scattered electromagnetic wave is no longer a completely polarized wave, but a partially polarized wave, although the incident wave is completely polarized.

因此，即使入射电磁波是完全极化电磁波，散射电磁波也不再是完全极化电磁波，而是部分极化电磁波。

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