explanation: the center of our milky way galaxy is hidden from the prying eyes of optical telescopes by clouds of obscuring dust and gas. a planoconvex lens used to concentrate light.
说明:在不透光尘埃与云气的遮掩下,我们银河系的中心在普通可见光望远镜中是难以看见的。
the adjust craft of the planoconvex lens interference optical route by using moire fringes means is expatiated.
提出了莫尔条纹法调节平凸透镜干涉光路的调节工艺;
Since these rays do not actually meet, they cannot form an image without a condensing lens of sort. A planoconvex lens used to concentrate light.
由于这些光线实际上不相交,如果不用某种会聚透镜的话,它们是不能成像的。
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