photographic plate

基本解释

And we record here. And this is the blowup of what is on that photographic plate.
我们在这里记录,这是感光片所拥有的东西的放大形式。
And then further you put some recording device, which in those days was a photographic plate, far across a room. So you take a tiny, tiny angle and you go far enough across the room.
接着放一些记录设备，那时用的是一个摄影用的感光片，取一个极小极小的角度,然后去到房间中足够远的地方。
Some distance above the lead block a photographic plate is placed.
在铅块上方某一距离处放一照相底板。

And then further you put some recording device, which in those days was a photographic plate, far across a room. So you take a tiny, tiny angle and you go far enough across the room.
接着放一些记录设备，那时用的是一个摄影用的感光片，取一个极小极小的角度,然后去到房间中足够远的地方。
麻省理工公开课 - 固态化学导论课程节选
And this was painstaking work. What you have here is the photographic plate demonstrating a spread.
这是门,细致的工作。
麻省理工公开课 - 固态化学导论课程节选
And we record here. And this is the blowup of what is on that photographic plate.
我们在这里记录,这是感光片所拥有的东西的放大形式。
麻省理工公开课 - 固态化学导论课程节选

Use a photographic plate to record an image from a zenith-pointing telescope, and you will end up with a streaky image, as a result of the earth's rotation.
ECONOMIST: Mirror, mirror