...The priests were now upon the dais—the rocky platform, divided by thegreat, glowing parabola of light...
Various 「Astounding Stories of Super-Science, June, 1930」
...There is a certain beautiful curve known to geometricians by the name ofthe parabola...
Robert Stawell Ball 「The Story of the Heavens」
...In 1681 Doerfel, a clergyman of Saxony, proved that the greatcomet then recently observed moved in a parabola, in the focus of whichthe sun was situated...
Robert Stawell Ball 「The Story of the Heavens」
...The theory ofgravitation, though it admits the parabola as a possible orbit for acomet, does not assert that the path must necessarily be of this type...
Robert Stawell Ball 「The Story of the Heavens」
...It had been observed in 1786, 1795, and1805, but on these occasions it had not been noticed that the comet'spath deviated from the parabola...
Robert Stawell Ball 「The Story of the Heavens」
...A parabola is not so simply defined,and five numbers, called the elements of its orbit, arerequired to fix accurately a comet's path around the sun...
George C. Comstock 「A Text-Book of Astronomy」
...It is now thoughtpossible that it may not be quite a parabola, but an ellipse soelongated that it will not return till 2255...
Oliver Lodge 「Pioneers of Science」
...It may be a parabola, an ellipsis, spiral, circular, &c...
Paul Henri Thiery (Baron D'Holbach) 「The System of Nature, Volume 1」
...He found that it was a parabola, and that thevelocity of the comet was governed by the law that the straight linefrom the sun to the comet swept over equal areas in equal times...
Robert Stawell Ball 「The Story of the Heavens」
...This comet followed a path whichcould not be certainly distinguished from a parabola, though there is nodoubt that it might have been a very elongated ellipse...
Robert Stawell Ball 「The Story of the Heavens」
...Astronomers, therefore, consider meteors as well ascomets to have the parabola and the elongated ellipse astheir characteristic orbits...
George C. Comstock 「A Text-Book of Astronomy」
...Theexcentricity of its orbit is enormous—in other words, it is either avery elongated ellipse or a parabola...
Oliver Lodge 「Pioneers of Science」
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