File:Diffraction on elliptic aperture with fft.png
Jump to navigation
Jump to search
Size of this preview: 402 × 599 pixels. Other resolutions: 161 × 240 pixels | 556 × 828 pixels.
Original file (556 × 828 pixels, file size: 315 KB, MIME type: image/png)
Captions
Captions
Add a one-line explanation of what this file represents
Summary[edit]
| Description |
English: The upper half of this image shows a diffraction pattern of an He-Ne laser beam on an elliptic aperture at about 3 metres distance. The lower half is a detail of its 2D Fourier transform calculated in GIMP. Thanks to similarity between the forward and inverse Fourier transform, it has approximately reconstructed the shape of the aperture. There are also two "wings" of higher spatial frequency caused by the millimeter grid on the paper. Note that the lower half of the image represents the imaginary values. The approximately reconstructed aperture shape is blended with its horizontally mirrored copy. |
| Date | |
| Source | Own work |
| Author | FDominec |
Licensing[edit]
I, the copyright holder of this work, hereby publish it under the following licenses:
This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license.
- You are free:
- to share – to copy, distribute and transmit the work
- to remix – to adapt the work
- Under the following conditions:
- attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
- share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.
|
Permission is granted to copy, distribute and/or modify this document under the terms of the 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. A copy of the license is included in the section entitled GNU Free Documentation License. |
You may select the license of your choice.
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 11:40, 29 June 2009 | | 556 × 828 (315 KB) | FDominec (talk | contribs) | {{Information |Description={{en|1={{Information |Description =The upper half of this image shows a diffraction pattern of He-Ne laser beam on an elliptic aperture about 3 m far. The lower half is a detail of its 2D Fourier transform calculated in GIMP. |
You cannot overwrite this file.
File usage on Commons
There are no pages that use this file.
File usage on other wikis
The following other wikis use this file:
- Usage on en.wikipedia.org
- Usage on es.wikipedia.org
- Usage on mk.wikipedia.org
- Usage on zh.wikipedia.org
