File:Ellipse Properties of Directrix and String Construction.svg
Original file (SVG file, nominally 884 × 484 pixels, file size: 2 KB)
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Summary[edit]
DescriptionEllipse Properties of Directrix and String Construction.svg |
English: A diagram showing some basic properties of an ellipse, including *The distance to a focus, F, from the centre C, is the eccentricity, e multiplied by the semimajor axis, a. *The distance from one focus to the other via any point on the ellipse, P, is always 2a. *The distance from a point, P, on the ellipse to a focus is always proportional to the distance to a vertical line, D, called the directrix. The constant of proportionality is the eccentricity, e. *The eccentricity is always between 0 and 1. At zero, the ellispe becomes a circle, at 1 the ellipse becomes a parabola. Greater than one, it is a hyperbola. Ellipse properties> e=0.8 , a=170 px , b=102 px , f=e*a=136 px , d=a/e=212.5 px , Origin = (0 px,0 px) These images were edited with the free open source program Inkscape |
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Previous version had been created with Inkscape (41735 bytes) now 5.8% of previous size
Licensing[edit]
This is a retouched picture, which means that it has been digitally altered from its original version. Modifications: Simplied and foci where in the wrong place. The original can be viewed here: Ellipse Properties.svg: . Modifications made by Dave3457.
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Original upload log[edit]
This image is a derivative work of the following images:
- File:Ellipse_Properties.svg licensed with PD-self
- 2008-12-08T05:29:54Z Inductiveload 400x260 (30964 Bytes) Fix text?
- 2008-12-08T05:25:44Z Inductiveload 400x260 (27156 Bytes) {{Information |Description={{en|1=A diagram showing some basic properties of an [[:en:ellipse|]], including *The distance to a focus, ''F'', from the centre ''C'', is the eccentricity, ''e'' multiplied by the semimajor axis,
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File history
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 20:59, 7 January 2015 | 884 × 484 (2 KB) | Krishnavedala (talk | contribs) | Simplified and hand drawn and clearer info to the scale | |
20:30, 6 July 2010 | 411 × 274 (41 KB) | Dave3457 (talk | contribs) | Adjusted directrix | ||
18:58, 4 July 2010 | 401 × 274 (40 KB) | Dave3457 (talk | contribs) | font change | ||
18:55, 4 July 2010 | 401 × 274 (39 KB) | Dave3457 (talk | contribs) | slight adjustment | ||
18:52, 4 July 2010 | 401 × 274 (39 KB) | Dave3457 (talk | contribs) | font change | ||
18:47, 4 July 2010 | 401 × 274 (39 KB) | Dave3457 (talk | contribs) | slight font change | ||
18:44, 4 July 2010 | 401 × 274 (39 KB) | Dave3457 (talk | contribs) | removed equation and changed fonts | ||
18:22, 4 July 2010 | 401 × 274 (40 KB) | Dave3457 (talk | contribs) | slight change | ||
18:21, 4 July 2010 | 401 × 274 (40 KB) | Dave3457 (talk | contribs) | slight change | ||
14:59, 4 July 2010 | 401 × 274 (40 KB) | Dave3457 (talk | contribs) | slight change |
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Short title | Ellipse properties |
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Image title | Eccentricity = 0.8, a = 170px, b = 102px, f = 136px, d = 212.5px |
Width | 884px |
Height | 484px |