File:Leonardo Da Vinci's "Telescope".jpg

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Leonardo_Da_Vinci's_"Telescope".jpg ‎(467 × 213 pixels, file size: 72 KB, MIME type: image/jpeg)

Summary edit

Media data and Non-free use rationale
Description	Drawing of Leonardo Da Vinci's purported telescope, along with his described lens, and focal lines.
Author or copyright owner	Alessandro Bettini
Source (WP:NFCC#4)	https://opg.optica.org/directpdfaccess/1c7818c5-56ec-4ce7-ac532294b5b98343_468878/opn-33-2-30.pdf
Date of publication	February 2022
Use in article (WP:NFCC#7)	History of the telescope
Purpose of use in article (WP:NFCC#8)	Illustrates the purported telescope designed by Leonardo Da Vinci.
Not replaceable with free media because (WP:NFCC#1)	The software or website from which the screenshot is taken is copyrighted and not released under a free license, so creation of a free image is not possible.
Not replaceable with textual coverage because (WP:NFCC#1)	Is a discussion of the optics Da Vinci's purported telescope, which is impossible without an illustration. Try writing a book on optics with no illustrations.
Minimal use (WP:NFCC#3)	A single graphic (not even the whole graphic, there's a second part)
Respect for commercial opportunities (WP:NFCC#2)	The use of a low resolution screenshot from software or a website will not impact the commercial viability of the software or site.
Other information	It's uncertain whether Bettini even could claim copyright on this, as it's Da Vinci's drawing, and he just drew a lens and focal lines on it.
Fair useFair use of copyrighted material in the context of History of the telescope//en.wikipedia.org/wiki/File:Leonardo_Da_Vinci%27s_%22Telescope%22.jpgtrue

Licensing edit

This work is copyrighted (or assumed to be copyrighted) and unlicensed. It does not fall into one of the blanket acceptable non-free content categories listed at Wikipedia:Non-free content § Images or Wikipedia:Non-free content § Audio clips, and it is not covered by a more specific non-free content license listed at Category:Wikipedia non-free file copyright templates. However, it is believed that the use of this work:

To illustrate the subject in question
Where no free equivalent is available or could be created that would adequately give the same information
On the English-language Wikipedia, hosted on servers in the United States by the non-profit Wikimedia Foundation,

qualifies as fair use under United States copyright law. Any other uses of this image, on Wikipedia or elsewhere, may be copyright infringement. See Wikipedia:Non-free content and Wikipedia:Copyrights.
Fair use

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Please add a detailed non-free use rationale for each article the image is used in, which must also declare compliance with the other parts of the non-free content criteria, as well as the source of the work and copyright information.
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File history

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	00:24, 1 August 2023		467 × 213 (72 KB)	DatBot (talk \| contribs)	Reduce size of non-free image (BOT - disable)
	12:59, 31 July 2023	No thumbnail	799 × 365 (83 KB)	Rei (talk \| contribs)	Uploading an excerpt from a non-free work using File Upload Wizard

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File usage

The following pages on the English Wikipedia use this file (pages on other projects are not listed):

History of the telescope