Talk:Ellipse/Archive 1: Difference between revisions
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imported>Paul Wormer No edit summary |
imported>Dmitrii Kouznetsov (→trammel, figs.: new section) |
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:I added two pictures from that source. Incidentally, feel free to change/adapt/add stuff, CZ is a wiki, you know. --[[User:Paul Wormer|Paul Wormer]] 12:08, 2 May 2010 (UTC) | :I added two pictures from that source. Incidentally, feel free to change/adapt/add stuff, CZ is a wiki, you know. --[[User:Paul Wormer|Paul Wormer]] 12:08, 2 May 2010 (UTC) | ||
== trammel, figs. == | |||
1. I have doubts about fig.2; it seems to me that the central line should overlap with the red and the green ellipsi, until their centers.<br> | |||
2. I like the deduction of the Trammel. Who was Trammel? What century, what country did he/she live?<br> | |||
3. How about to borrow the animation of the trammel device grom wikipedia; I mean, http://en.wikipedia.org/wiki/File:Bsgrinder.gif ?<br> | |||
4. As for the drawing with a string... I used the loop to draw ellipsi; then the whole ellipse can be drawn at once. (The lenth of the string should be extended with a piece of length equal to the distance betwin the focuses.) <br> | |||
[[User:Dmitrii Kouznetsov|Dmitrii Kouznetsov]] 18:30, 2 May 2010 (UTC) | |||
Revision as of 12:30, 2 May 2010
Probably this picture could be used: [1] (Fig.207), see [2]. Boris Tsirelson 05:12, 2 May 2010 (UTC)
- I added two pictures from that source. Incidentally, feel free to change/adapt/add stuff, CZ is a wiki, you know. --Paul Wormer 12:08, 2 May 2010 (UTC)
trammel, figs.
1. I have doubts about fig.2; it seems to me that the central line should overlap with the red and the green ellipsi, until their centers.
2. I like the deduction of the Trammel. Who was Trammel? What century, what country did he/she live?
3. How about to borrow the animation of the trammel device grom wikipedia; I mean, http://en.wikipedia.org/wiki/File:Bsgrinder.gif ?
4. As for the drawing with a string... I used the loop to draw ellipsi; then the whole ellipse can be drawn at once. (The lenth of the string should be extended with a piece of length equal to the distance betwin the focuses.)
Dmitrii Kouznetsov 18:30, 2 May 2010 (UTC)
