File:Violin of Johann Goldfuß.jpg

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Description	Violin constructed by Johann Goldfuß using the golden ratio
Source	http://www.math.unibas.ch/~walser/Stud_Arbeiten/Goldener_Schnitt_Pentagon/Peeters/Peeters.pdf
Date	August 29, 2008
Author	Johann Goldfuß
Permission (Reusing this file)	See below.

Fair use for Johann Goldfuß

Violin is the only work of Johann Goldfuß having the dimensions of the golden ratio
Image is of low resolution and would be unlikely to impact sales of prints or be usable as a desktop backdrop
It illustrates the violin of Johann Goldfuß that could not be conveyed in words
The work is discussed in the article

This is a two-dimensional representation of a copyrighted sculpture, statue or any other three-dimensional work of art. As such it is a derivative work of art, and per US Copyright Act of 1976, § 106(2) whoever holds copyright of the original has the exclusive right to authorize derivative works.

Per § 107 it is believed that reproduction for criticism, comment, teaching and scholarship constitutes fair use and does not infringe copyright.

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qualifies as fair use under the Copyright law of the United States. Any other uses of this image, on Wikipedia or elsewhere, might be copyright infringement.
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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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

To the uploader:

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.
For example non-free use rationales, see Wikipedia:Use rationale examples.
Template:Non-free use rationale may be helpful for stating the rationale.
This tag is not a sufficient claim of fair use.

To patrollers and administrators: If this image has an appropriate rationale please append |image has rationale=yes as a parameter to the license template.

File history

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	04:13, 15 July 2017		422 × 236 (13 KB)	DatBot (talk \| contribs)	Reduce size of non-free image (BOT - disable)
	04:45, 30 August 2008	No thumbnail	622 × 349 (36 KB)	Afil (talk \| contribs)	{{Information \|Description=Violin constructed by Johann Goldfuß using the golden ratio \|Source=http://www.math.unibas.ch/~walser/Stud_Arbeiten/Goldener_Schnitt_Pentagon/Peeters/Peeters.pdf \|Date= \|Author= \|Permission= \|other_versions= }} == Fair use f

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File usage

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Johann Goldfuß