File:Dandelin spheres.svg

Size of this PNG preview of this SVG file: 330 × 397 pixels. Other resolutions: 199 × 240 pixels | 399 × 480 pixels | 638 × 768 pixels | 851 × 1,024 pixels | 1,702 × 2,048 pixels.

Original file (SVG file, nominally 330 × 397 pixels, file size: 6 KB)

This is a file from the Wikimedia Commons. Information from its description page there is shown below.
Commons is a freely licensed media file repository. You can help.

Summary

DescriptionDandelin spheres.svg	Deutsch: de:Dandelinsche Kugel an einer Ellipse English: Directrix of an ellipse from the Dandelin spheres; Conic Section. PF+PF'=const. Español: Directriz de una elipse a partir de las esferas de Dandelin Русский: Директрисы Df1 и Df2 и фокусы f1 и f2 эллипса, как конического сечения, разделяющего шары Данделена.
Date	vectorization 24 July 2016 (upload date)
Source	Own work based on: File:Dandelinsche Kugeln.PNG
Author	Original: Honina; Vectorization: User:Perhelion
Other versions	Category:Dandelin spheres
SVG development InfoField	The SVG code is valid. This diagram was created with Inkscape, and then manually edited . This diagram uses embedded text that can be easily translated using a text editor.

Licensing

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.

File history

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

	Date/Time	Dimensions	User	Comment
current	12:36, 25 July 2016	330 × 397 (6 KB)	Perhelion	cosmetic
	12:14, 25 July 2016	330 × 397 (6 KB)	Perhelion	replace font serif → sans-serif
	11:56, 25 July 2016	330 × 397 (6 KB)	Perhelion	tiny improvement
	11:11, 25 July 2016	330 × 397 (6 KB)	Perhelion	add dimension
	10:48, 25 July 2016	512 × 616 (6 KB)	Perhelion	+ en, uk, fr, it
	20:52, 24 July 2016	512 × 616 (5 KB)	Perhelion	improved
	18:08, 24 July 2016	512 × 616 (4 KB)	Perhelion	small text position fix // Editing SVG source code using User:Rillke/SVGedit.js; upload handled by User:Rillke/MwJSBot.js
	18:04, 24 July 2016	512 × 616 (4 KB)	Perhelion	=={{int:filedesc}}== {{Information \|description= {{de\|1=de:Dandelinsche Kugel an einer Ellipse}} {{en\|1=Directrix of an ellipse from the Dandelin spheres; Conic Section. PF+PF'=const.}} {{es\|1=Directriz de una elipse a par...