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Perihelion   Listen
Perihelion

noun
(pl. perihelia)
1.
Periapsis in solar orbit; the point in the orbit of a planet or comet where it is nearest to the sun.






WordNet 3.0 © 2010 Princeton University








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"Perihelion" Quotes from Famous Books



... as the god of Love. When the face has all the soft beauty of a woman, and the figure, slight, slender, lithe and graceful, carries only a suggestion of the masculine strength to come—then beauty is at perihelion. The "Eros" of Phidias was not the helpless, dumpy cherub "Cupid"—he was a slender-limbed boy of twelve years who showed ...
— Little Journeys to the Homes of the Great - Volume 14 - Little Journeys to the Homes of Great Musicians • Elbert Hubbard

... Josephine, and I am sure she will honor us; for she was born six years ago under the conjunction of Jupiter and Venus, and while Mars was at perihelion. Moreover, she is the seventh daughter of a seventh daughter, and there are those who believe that there is especial virtue in that. I named her after the French empress, not because I am a particular admirer of that remarkable but unfortunate woman's character, ...
— The House - An Episode in the Lives of Reuben Baker, Astronomer, and of His Wife, Alice • Eugene Field

... of condensation, and an increased or diminished capacity of reflecting borrowed light. In the comet of 1618, and in that which has a period of three years, it was observed first by Hevelius that the nucleus of the comet diminished at its perihelion and enlarged at its aphelion, a fact which, after remaining long unheeded, was again noticed by the talented astronomer Valz at Nismes. The regularity of the change of volume, according to the different degrees of distance from the Sun, appears ...
— COSMOS: A Sketch of the Physical Description of the Universe, Vol. 1 • Alexander von Humboldt

... perceptions of form were sufficiently acute, we should see that these curves of light are not exact circles, but a little flattened into an ellipse, with the sun always in one of the foci. Hence each planet is nearer to the sun at one part of its orbit than another; that point is called the perihelion, and the farthest point aphelion. This eccentricity of orbit, or distance of the sun from the centre, is very small. [Page 106] In the case of Venus it is only .007 of the whole, and in no instance is it more than .2, viz., that of Mercury. This makes the sun appear ...
— Recreations in Astronomy - With Directions for Practical Experiments and Telescopic Work • Henry Warren



Words linked to "Perihelion" :   aphelion, point of periapsis, periapsis



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