The big question is: Did he use a Camera Obscura, an optical device to paint this?

他画这幅画是否用了暗箱这种置？

In the case of a telescope, the “bucket” is an optical device like a lens or a mirror that collects light.

对望远镜来说，“水桶”就是一种像透镜单镜一样收集线的置。

Scientists at the Luxembourg Institute of Science and Technology list for short combined a specially designed spectrometer with a commercially available helium ion microscope to build a very high-resolution optical device capable of looking into these tiny worlds.

通过将特的分仪与市上的氦离子显微镜相结合，来自卢森堡理工院的科家造了一个能够探索微型世界的仪器。