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Q&A How should I describe a light beam coming out from any point in polar coordinates?

In my article a half circle shaped sheet is being rotated on z axis. A light beam is constructed on the surface of the sheet in any time in any point. How should I describe the light beam with its ...

1 answer  ·  posted 5y ago by Alper91‭  ·  last activity 4y ago by System‭

#3: Attribution notice added by user avatar System‭ · 2019-12-08T10:50:50Z (over 4 years ago)
Source: https://writers.stackexchange.com/q/42055
License name: CC BY-SA 3.0
License URL: https://creativecommons.org/licenses/by-sa/3.0/
#2: Initial revision by user avatar Alper91‭ · 2019-12-08T10:50:50Z (over 4 years ago)
In my article a half circle shaped sheet is being rotated on z axis. A light beam is constructed on the surface of the sheet in any time in any point. How should I describe the light beam with its angle view?

[![The structure](https://i.stack.imgur.com/2XJ3R.png)](https://i.stack.imgur.com/2XJ3R.png)

I can't think of anything for this. Do you have any experience on this subject?

#1: Imported from external source by user avatar System‭ · 2019-02-08T07:26:25Z (about 5 years ago)
Original score: 3