This is a Featured picture. Click here for more information.
This is a Quality image. Click here for more information.

File:Plastic Protractor Polarized 05375.jpg

From Wikimedia Commons, the free media repository
Jump to navigation Jump to search

Original file (2,048 × 1,536 pixels, file size: 738 KB, MIME type: image/jpeg)

Captions

Captions

Add a one-line explanation of what this file represents
Description
English: Tension lines in plastic protractor seen under cross polarized light. When a ray of plane polarised light is passed through a photoelastic material, it gets resolved along the two principal stress directions and each of these components experiences different refractive indices. The difference in the refractive indices leads to a relative phase retardation between the two component waves. The birefringence of the plastic layer shows colored fringes. Also called Photoelasticimetry or photoelasticity. Not seen does not mean No difference.
Français : Lignes de tension dans un rapporteur en plastique vu sous une lumière polarisée. Lorsqu'elle traverse un matériau sous tension mécanique, les deux composantes de l'onde subissent un retard l'une par rapport à l'autre. Ce retard fait apparaitre en lumière blanche des irisations dans le matériau. Ce phénomène, nommé photoélasticité, est mesuré par photoélasticimétrie.
Date (25 May 2004, according to Exif data)
Source Self-photographed
Author Nevit Dilmen
Permission
(Reusing this file)
I, the copyright holder of this work, hereby publish it under the following licenses:
GNU head 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.
w:en:Creative Commons
attribution share alike 		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.
This licensing tag was added to this file as part of the GFDL licensing update.
You may select the license of your choice.

Assessment

[edit]
Featured picture
Quality image
Quality image

Wikimedia CommonsWikipedia

This is a featured picture on Wikimedia Commons (Featured pictures) and is considered one of the finest images. See its nomination here.
This is a quality image and is considered to meet the quality image guidelines.
 With an aspect ratio of 4:3 or 5:4, this image is suitable as a computer wallpaper (see gallery).
 This is a featured picture on the Tamil language Wikipedia (இன்றைய சிறப்புப் படம்) and is considered one of the finest images. See its nomination here.

If you have an image of similar quality that can be published under a suitable copyright license, be sure to upload it, tag it, and nominate it.

File history

Click on a date/time to view the file as it appeared at that time.

Date/TimeThumbnailDimensionsUserComment
current10:54, 3 April 2008Thumbnail for version as of 10:54, 3 April 20082,048 × 1,536 (738 KB)Nevit (talk | contribs){{Information |Description=Tension lines in plastic protractor seen under polarized light. |Source=self-made |Date=2004 |Author= Nevit |Permission= |other_versions= }} Category:Nevit Dilmen Category:Protractors

You cannot overwrite this file.

File usage on other wikis

The following other wikis use this file:

View more global usage of this file.

Metadata

This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.

Retrieved from "https://commons.wikimedia.org/w/index.php?title=File:Plastic_Protractor_Polarized_05375.jpg&oldid=897113271"