File:Pencil beam 2.png
Pencil_beam_2.png (360 × 100 pixels, file size: 1 KB, MIME type: image/png)
Summary edit
| Description |
A pencil beam or pencil of rays is a geometric construct used to describe a beam or portion of a beam of electromagnetic radiation or charged particles. |
|---|---|
| Source |
The image appears on a website entitled, "File:Pencil beam 2.png" at https://en.wikipedia.org/wiki/File:Pencil_beam_2.png, originally https://www.radartutorial.eu. |
| Date |
19 June 2008 |
| Author | |
| Rationale |
No free licensed or public domain alternatives known to exist to show a pencil beam or that a pencil of rays is a geometric construct used to describe a beam or portion of a beam of electromagnetic radiation or charged particles. |
| Permission |
Fair Use, this file may be licensed under the Creative Commons Attribution-ShareAlike 3.0 License, or GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. Subject to disclaimers. But if not then fair use. |
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File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 03:11, 31 January 2019 | | 360 × 100 (1 KB) | Marshallsumter (discuss | contribs) | {{Information1 |Description = A pencil beam or pencil of rays is a geometric construct used to describe a beam or portion of a beam of electromagnetic radiation or charged particles. |Source = The image appears on a website entitled, "File:Pencil beam 2.png" at https://en.wikipedia.org/wiki/File:Pencil_beam_2.png, originally https://www.radartutorial.eu. |Date = 19 June 2008 |Author = Charly Whisky |Rationale = No free licensed or public domain alternatives known to... |
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- File:Pencil beam 2.png from Wikimedia Commons
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