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An ellipsograph is a mechanism that generates the shape of an ellipse. One common form of ellipsograph is known as the trammel of Archimedes . [ 1 ] It consists of two shuttles which are confined to perpendicular channels or rails and a rod which is attached to the shuttles by pivots at adjustable positions along the rod.
For help on the process, see Wikipedia:How to draw a diagram with Inkscape. This tutorial aims to instruct a beginner on the basic principles of vector graphics using Microsoft Word (Office 97 or later). The basic principles are the same in other drawing programs such as CorelDraw or the free and open source OpenOffice.org.
English: Animation of an ellipsograph, or trammel of Archimedes, drawing an ellipse. Done in Blender by Hugo Spinelli. File for the 3D model can be found here: ...
If the center and the semi axis of an ellipse are determined the ellipse can be drawn using an ellipsograph or by hand (see ellipse). Rytz’s construction is a classical construction of Euclidean geometry, in which only compass and ruler are allowed as aids. The design is named after its inventor David Rytz of Brugg (1801–1868).
The more generic term "ellipsograph" currently redirects to this article, and ellipsographs in general are described in a section near the end. In my opinion this article would be improved by re-organizing it to make the general topic of drawing ellipses be its root scope, with the elliptic trammel as a top-level section, as a sibling to other ...
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Then the free end of the strip traces an ellipse, while the strip is moved. For the proof, one recognizes that the tracing point can be described parametrically by ( a cos t , b sin t ) {\displaystyle (a\cos t,\,b\sin t)} , where parameter t {\displaystyle t} is the angle of slope of the paper strip.
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