File:Enhanced aluminum coated first surface mirror on an optical flat.JPG
Size of this preview: 800 × 562 pixels. Other resolutions: 320 × 225 pixels | 640 × 450 pixels | 1,024 × 720 pixels | 1,280 × 900 pixels | 1,656 × 1,164 pixels.
Original file (1,656 × 1,164 pixels, file size: 424 KB, MIME type: image/jpeg)
 | This is a file from the Wikimedia Commons. Information from its description page there is shown below. Commons is a freely licensed media file repository. You can help. |
Summary
| Description |
English: An optical flat that has been coated with aluminum by vacuum deposition, to make a first-surface mirror. The coating is enhanced with dielectric coatings, both improving the reflectance and protecting the soft aluminum from damage. Both sides of the optical flat were certified to be polished to /20. That's 1/20 of the wavelength of the helium-neon laser used in the interferometer, which equates to a surface deviation of no more than 31.6 nanometers.
The substrate is quartz, measuring 1 inch in diameter by 1/2 inch thick. |
| Date | |
| Source | Own work |
| Author | Zaereth |
Licensing
I, the copyright holder of this work, hereby publish it under the following license:
 
|
This file is made available under the Creative Commons CC0 1.0 Universal Public Domain Dedication. |
| The person who associated a work with this deed has dedicated the work to the public domain by waiving all of their rights to the work worldwide under copyright law, including all related and neighboring rights, to the extent allowed by law. You can copy, modify, distribute and perform the work, even for commercial purposes, all without asking permission.
|
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 03:06, 20 June 2012 | | 1,656 × 1,164 (424 KB) | Zaereth~commonswiki |
File usage
The following pages on the English Wikipedia use this file (pages on other projects are not listed):
Global file usage
The following other wikis use this file:
- Usage on arz.wikipedia.org
- Usage on bcl.wikipedia.org
- Usage on kn.wikipedia.org
- Usage on nn.wikipedia.org
- Usage on pt.wikipedia.org
- Usage on ru.wikipedia.org
- Usage on sd.wikipedia.org
- Usage on yo.wikipedia.org
