How to use ellipsograph in a sentence? Find typical usage patterns (collocations)/phrases/context for "ellipsograph" and check conjugation/comparative form for "ellipsograph". Mastering all the usages of "ellipsograph" from sentence examples published by news publications.
He was polymathic in his interests and contributed text and drawings to a number of periodicals and encyclopaedias. Farey is also remembered as the first English inventor of the ellipsograph, an instrument used by draughtsmen to inscribe ellipses.
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The astrolabe was an early mathematical instrument used in astronomy and navigation. Instruments such as the astrolabe, the quadrant, and others were used to measure and accurately record the relative positions and movements of planets and other celestial objects. The sextant and other related instruments were essential for navigation at sea. Most instruments are used within the field of geometry, including the ruler, dividers, protractor, set square, compass, ellipsograph, T-square and opisometer.
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The principle of ellipsographs were known to Greek mathematicians such as Archimedes and Proklos. If there is no ellipsograph available, one can draw an ellipse using an approximation by the four osculating circles at the vertices. For any method described below, knowledge of the axes and the semi-axes is necessary (or equivalently: the foci and the semi-major axis). If this presumption is not fulfilled one has to know at least two conjugate diameters.
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Royal Society of Arts (Great Britain). Transactions of the Society, Instituted at London, for the ..., Volume 32, (1814), p. 70-76 In an accompanying letter printed in the Transactions, Farey explained in general: An additional four page long explanation of Farey's "Instrument for drawing Lines to an inaccessible center" in Plate 2 (see image fig. 4, 5.) started explaining: Farey's Elliptograph, 1825 In 1813 Farey also constructed a machine for drawing ellipses, the so-called ellipsograph.
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