Size of this preview: 800 × 482 pixels. Other resolutions: 320 × 193 pixels | 640 × 386 pixels | 1,024 × 617 pixels | 1,280 × 771 pixels | 1,778 × 1,071 pixels.
Original file (1,778 × 1,071 pixels, file size: 157 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: Sketches of uniaxial interference figures as might be created with a geological microscope. In these cases, the figures are viewed along the optic axis of each mineral. The colours approximate birefringence colours which might be seen if this were a mineral with second order maximum birefringence.The dark "maltese cross" pattern is characteristic of uniaxial minerals, and will not vary as the microscope stage is turned. Also shown are schematics of the shape of a cross section through the mineral's optical indicatrix (recording its refractive index in 3D) that would be seen at each position. The elongated direction could be distinguished by adding a sensitive tint plate to the microscope, letting the user discriminate between "uniaxial positive" (left) and "uniaxial negative" (right) minerals. |
| Date | |
| Source | Own work |
| Author | DanHobley |
Licensing
I, the copyright holder of this work, hereby publish it under the following license:
This file is licensed under the Creative Commons Attribution-Share Alike 4.0 International 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.
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 22:11, 9 January 2016 | | 1,778 × 1,071 (157 KB) | DanHobley | User created page with UploadWizard |
File usage
The following page uses this file:
Global file usage
The following other wikis use this file:
- Usage on ca.wiki.x.io
- Usage on es.wiki.x.io
- Usage on fr.wiki.x.io
