File:PSM V39 D635 Making spectacle lenses.jpg

From Wikisource
Jump to navigation Jump to search

Original file (2,598 × 1,686 pixels, file size: 1.12 MB, MIME type: image/jpeg)

Description Making spectacle lenses
Date
Source Popular Science Monthly Volume 39
Author Unknown authorUnknown author
Permission
(Reusing this file)
Public domain

This work is in the public domain in its country of origin and other countries and areas where the copyright term is the author's life plus 70 years or fewer.

You must also include a United States public domain tag to indicate why this work is in the public domain in the United States.
 Note that a few countries have copyright terms longer than 70 years: Mexico has 100 years, Jamaica has 95 years, Colombia has 80 years, and Guatemala and Samoa have 75 years. This image may not be in the public domain in these countries, which moreover do not implement the rule of the shorter term. Honduras has a general copyright term of 75 years, but it does implement the rule of the shorter term. Copyright may extend on works created by French who died for France in World War II (more information), Russians who served in the Eastern Front of World War II (known as the Great Patriotic War in Russia) and posthumously rehabilitated victims of Soviet repressions (more information).
This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights.


This is a retouched picture, which means that it has been digitally altered from its original version. Modifications: Extracted image from book, to greyscale, cropped whitespace. The original can be viewed here: Popular Science Monthly Volume 39.djvu: . Modifications made by Ineuw.

Captions

Add a one-line explanation of what this file represents

Items portrayed in this file

depicts

File history

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

Date/TimeThumbnailDimensionsUserComment
current04:07, 13 October 2015Thumbnail for version as of 04:07, 13 October 20152,598 × 1,686 (1.12 MB)IneuwCleaned image and improved contrast
20:35, 27 November 2010Thumbnail for version as of 20:35, 27 November 20102,602 × 1,693 (1.39 MB)Ineuw{{Information |Description = Making spectacle lenses |Source = http://en.wikisource.org/wiki/Page:Popular_Science_Monthly_Volume_39.djvu/633 |Date = 1891 |Author = Unknown |Permission = {{PD-old}} |other_versions = }
Retrieved from "https://en.wikisource.org/wiki/File:PSM_V39_D635_Making_spectacle_lenses.jpg"