File:Compact Disc Numerical Aperture.svg

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

Original file ‎(SVG file, nominally 400 × 484 pixels, file size: 2 KB)

Captions

Captions

Add a one-line explanation of what this file represents
Description
English: Compact disks are made of 1.2 mm thick polycarbonate plastic with a refractive index of 1.55. The laser light is focused down to 1 µm, but at the surface the diameter is 0.8 mm, making the readout insensitive to dust specks.
Date
Source Own work
Author Pieter Kuiper
Permission
(Reusing this file)
Public domain I, the copyright holder of this work, release this work into the public domain. This applies worldwide.
In some countries this may not be legally possible; if so:
I grant anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.
SVG development
InfoField
 
The SVG code is valid.
 
This diagram was created with a text editor.
 
 This diagram uses embedded text that can be easily translated using a text editor.

File history

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

Date/TimeThumbnailDimensionsUserComment
current19:10, 31 October 2009Thumbnail for version as of 19:10, 31 October 2009400 × 484 (2 KB)Pieter Kuiper (talk | contribs)more accurate numbers, angle values added
23:39, 29 October 2009Thumbnail for version as of 23:39, 29 October 2009400 × 450 (2 KB)Pieter Kuiper (talk | contribs)better colours
17:05, 29 October 2009Thumbnail for version as of 17:05, 29 October 2009400 × 450 (2 KB)Pieter Kuiper (talk | contribs){{Information |Description={{en|1=Compact disks are made of 1.2 mm thick polycarbonate plastic with a refractive index of 1.55. The laser light is focused down to 1 µm, but at the surface the diameter is 0.8 mm, making the readout insensitive to dust spe

You cannot overwrite this file.

The following page uses 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:Compact_Disc_Numerical_Aperture.svg&oldid=866688040"