ELLIPSE

closed plane curve consisting of all points for which the sum of the distances between a point on the curve and two fixed points (foci) is the same. It is the conic section formed by a plane cutting all the elements of the cone in the same nappe. The center of an ellipse is the point halfway between its foci. The major axis is the chord that passes through the foci. The minor axis is the chord that passes through the center perpendicular to the major axis. The latus rectum is the chord through either focus perpendicular to the major axis. The vertices are the two points of intersection of the major axis with the curve. The eccentricity of an ellipse, a ratio of two lengths, is a measure of its flatness; it is the distance from the center to either focus divided by the distance from the center to either vertex. The circle may be considered an ellipse of eccentricity zero, i.e., one in which the center and the two foci all coincide.

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The Columbia Encyclopedia, Sixth Edition Copyright© 2004, Columbia University Press. Licensed from Lernout & Hauspie Speech Products N.V. All rights reserved.

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Questia Books and Articles on: Ellipse
We found: 2700 results
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books on: Ellipse  - 2042 results

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1.
Ellipse of Uncertainty: An Introduction to Postmodern Fantasy
Book by Lance Olsen; Greenwood Press, 1987
Subjects: Fantasy Literature--History And Criticism, Literature, Modern--20th Century--History And Criticism, Postmodernism (Literature)
ELLIPSE OF UNCERTAINTY Recent Titles in Contributions to the...Contemporary Women Writers of Fantasy Charlotte Spivack Ellipse of Uncertainty AN INTRODUCTION TO POSTMODERN FANTASY...Cataloging-in-Publication Data Olsen, Lance, 1956- Ellipse of uncertainty. Contributions to the study of science...
2.
Mathematical Sorcery: Revealing the Secrets of Numbers
Book by Calvin C. Clawson; Plenum Trade, 1999
Subjects: Mathematics--Popular Works
...three remarkable curves, the parabola, ellipse, and hyperbola. Before Apollonius, Greek...used to generate the conic sections: the ellipse, parabola, and hyperbola. We can now...circle is really a special case of an ellipse. Next we generate a standard ellipse by...
3.
Patterns of Discovery: An Inquiry into the Conceptual Foundations of Science
Book by Norwood Russell Hanson; Cambridge University Press, 1958
Subjects: Science--Philosophy
...profound. It is of a piece with Tycho and Kepler seeing different things at dawn. It is like Keplers use of the same ellipse first as a mathematical tool and later as a physical hypo thesis: the conceptual difference between these was enormous. 4...
4.
The Crescent Dictionary of Mathematics
Book by William Karush; Macmillan, 1962
Subjects: Mathematics--Dictionaries
...early "method of exhaustions." See Ellipse, Parallelogram , etc., for areas of particular...Auxiliary Circle Of an hyperbola ellipse , the circle with radius equal to half...figure as in the "major axis" of an ellipse . See Cylinder, Ellipse , etc., for axes...
5.
Mathematics: A Cultural Approach
Book by Morris Kline; Addison-Wesley Pub. Co., 1962
Subjects: Mathematics
...284 13-5 Finding a curve from its equation 289 13-6 The ellipse 291 13-7 The equations of surfaces 293 13-8 Four-dimensional...
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journal articles on: Ellipse  - 249 results

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1.
Clarifying the Standard Deviational Ellipse
Journal article by Jianxin Gong; Geographical Analysis, Vol. 34, 2002
Subjects: Ellipse--Analysis, Mathematics--Models, Standard deviations--Analysis
Clarifying the standard deviational ellipse. by Jianxin Gong For a set of geographical...curve, often referred to as "standard deviational ellipse" (SDE), is not in fact an ellipse. The actual shape of the curve has remained unclear...
2.
Ellipse et Reduplication: L'obsession Du Vide Chez Patrick Modiano
Journal article by Paul Raymond Cote; The Romanic Review, Vol. 85, 1994
Subjects: French literature--20th century, Modiano, Patrick--Criticism, interpretation, etc.
Ellipse et reduplication: lobsession du vide chez Patrick Modiano...de reconstitution dans le but de faire disparaitre ces ellipses, a la fois chronologiques et psychologiques. Deux processus...sa fonction de createur en faconnant maintes fois une ellipse situationnelle dont les pretendus efforts pour la combler...
3.
Piagetian Conservation in College Students: a Classroom Demonstration
Journal article by Eliot Shimoff; Teaching of Psychology, Vol. 25, 1998
Subjects: Psychology--Study And Teaching--Periodicals
...assuming that deforming a circle into an ellipse with the same circumference does not...loop, so that the circle deforms into an ellipse; as the top and bottom are squeezed together...circle was unchanged when deformed into an ellipse. In the standard Piagetian conservation...
4.
A Genetic Approach to Detecting Clusters in Point Data Sets
Journal article by Jamison Conley, Mark Gahegan, James Macgill; Geographical Analysis, Vol. 37, 2005
Subjects: Boundaries (Geography)--Analysis, Boundaries--Analysis, Spatial analysis (Statistics)--Methods
...positive solutions (i.e., circles or ellipses) for each cluster in the data set. This...improvements are: (i) switching from circles to ellipses, (ii) introducing mechanisms to prevent...adding the ability to introduce random ellipses into each generation, and (v) developing...
5.
A Note on Stimulus Control Shaping and One-Trial Learning in Two- and Three-Year-Old Children
Journal article by Lawrence T. Stoddard, Richard W. Serna, William J. Mcilvane; The Psychological Record, Vol. 44, 1994
Subjects: Children--Psychology and mental health, Conditioned response--Research, Discrimination learning--Research
...children to discriminate circles from ellipses. One method was a well-validated stimulus...1966, 1967; see baseline training and ellipse fading program, below). The other methods...in our previous studies with the circle-ellipse program. Method Subjects Fifty-nine...
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magazine articles on: Ellipse  - 110 results

       More magazine Results: 1-10 11-20 21-30 31-40 41-50 >>  
 
1.
On "The Matter of Time"
Magazine article by Hal Foster; Artforum International, Vol. 44, September 2005
Subjects: Guggenheim Museum Bilbao, Modern sculpture, Sculpture, Modern, Serra, Richard--Interviews, The Matter of Time (Sculpture)
...work inaugurated with his first Torqued Ellipses nearly a decade ago. For the occasion...Guggenheim Bilbao, stems from the Torqued Ellipses begun in 1996. Can you talk about the...RICHARD SERRA: When I began the Torqued Ellipses, I was concerned less with making one...
2.
Puppets, Protesters and Police: April 16 Mobilization Builds Momentum against the Imf and World Bank
Magazine article by Robert Weissman; Multinational Monitor, Vol. 21, May 2000
Subjects: Demonstrations & protests, IMF, International Bank for Reconstruction & Development, International Monetary Fund, Washington DC, World Bank
...as well as a large demonstration on the Ellipse behind the White House, captured the attention...Bank policies. The demonstrators at the Ellipse heard from activists confronting IMF and...entirety of the April 16 demonstration on the Ellipse. By the time of the protests, the IMF...
3.
Place: Richard Serra
Magazine article; School Arts, Vol. 101, September 2001
Subjects: Sculptors--Criticism, interpretation, etc., Sculpture--Exhibitions, Serra, Richard--Criticism, interpretation, etc.
...Richard Serra Richard Serra, Torqued Ellipses, 1996-97. Cor-Ten Steel. Installation view from "Torqued Ellipses," Dia Center for the Arts, New York...is rust, and the third, Double Torqued Ellipse, which you see here in the foreground...
4.
10 Ways to Get Your Share
Magazine article; Ebony, Vol. 55, September 2000
Subjects: College students--Finance, Scholarships--Analysis
...One Physics Ellipse...renewable One Physics Ellipse $3,000, one-time...seniors or college One Physics Ellipse freshmen and sophomores...
5.
$105 Billion Scholarship Bonanza: 6 Steps to Success
Magazine article; Ebony, Vol. 59, September 2004
Subjects: Education, Higher--Economic aspects, Higher education--Economic aspects, Scholarships, Scholarships (Financial aid), Universities and colleges--Finance, Universities and colleges--United States
...One Physics Ellipse...000, one-time One Physics Ellipse renewable...citizen or permanent One Physics Ellipse resident who is majoring...
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newspaper articles on: Ellipse  - 287 results

       More newspaper Results: 1-10 11-20 21-30 31-40 41-50 >>  
 
1.
Ellipse Photo Exhibit Chronicles the Attack
Newspaper article; The Washington Times, September 10, 2002
Ellipse photo exhibit chronicles the attack Byline: Patrick...WASHINGTON TIMES Construction worker Art Parry paused on the Ellipse yesterday and stared up in disbelief at the image projected...Photographs." A portion of the exhibit will be on display at the Ellipse from 7 a.m. to 10 p.m. until Thursday. Organizers of...
2.
`Hate Crime' Probed: Muslim Symbol on Ellipse Painted with Swastika
Newspaper article by Stephen Dinan; The Washington Times, December 29, 1997
`Hate crime probed: Muslim symbol on Ellipse painted with swastika by Stephen Dinan Mohamed Said Ouafi came to the Ellipse Friday night hoping to show his friend...the Muslim symbol had appeared on the Ellipse during the holiday season. Instead the...
3.
The Ellipse at Government Center
Newspaper article by Amy Hutchinson; The Washington Times, December 12, 1997
THE ELLIPSE AT GOVERNMENT CENTER by Amy Hutchinson...days. AGE: 7 years old SPECIALS: The Ellipse offers one months free rent on a two-bedroom...parking is also available. AMENITIES: The Ellipse provides a 24-hour health club with sauna...
4.
Snow, Wind Hamper Concert on Ellipse; but Not 'Too Cold to Celebrate'
Newspaper article; The Washington Times, January 20, 2005
Snow, Wind Hamper Concert on Ellipse; but Not Too Cold to Celebrate...Bushs re-election at a concert on the Ellipse amid tight security. "No night is...Those who attended the concert on the Ellipse had to walk several blocks to the...
5.
Ellipse Opens Its Closet to Show Clothes as Art
Newspaper article by Joanna Shaw-Eagle; The Washington Times, September 9, 2000
Ellipse opens its closet to show clothes as art by Joanna...sculpture" by Sha Sha Higby dominates one wall at Arlingtons Ellipse Art Center. Titled "Passage Into a Paper Sea," it is the...such an honor was given to an arts organization. WHERE: Ellipse Arts Center, 4350 N. Fairfax Drive, Arlington WHEN...
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encyclopedia articles on: Ellipse  - 12 results

       More encyclopedia Results: 1-10 11-12 >>  
 
1.
Ellipse
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
ELLIPSE closed plane curve consisting of all points for which...elements of the cone in the same nappe. The center of an ellipse is the point halfway between its foci. The major axis is...of the major axis with the curve. The eccentricity of an ellipse, a ratio of two lengths, is a measure of its flatness...
2.
Kepler's Laws
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
...the shape of each planets orbit is an ellipse with the sun at one focus. The sun is thus off-center in the ellipse and the planets distance from the sun...from the sun (the semimajor axis of the ellipse) and the time to complete one revolution...
3.
Conic Section
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
...intersection of a plane and a right circular cone (conical surface). The ordinary conic sections are the circle , the ellipse , the parabola , and the hyperbola . When the plane passes through the vertex of the cone, the result is a point, a straight...
4.
Apollonius of Perga
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
...work, much of the work of his predecessors, among whom was Euclid. Apollonius introduced the terms parabola, hyperbola, and ellipse. In his works Greek mathematics reached its culmination. ____________________ Copyright 2009 Columbia University Press...
5.
Cone , in Mathematics
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
...surfaces one above and one below the vertex called nappes. If the directing curve is a conic section (e.g., a circle or ellipse) the cone is called a quadric cone. The most common type of cone is the right circular cone, a quadric cone in which the directrix...
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