...Even as Mich'l Aresadjusted the parabolic antenna of the thought-receptor vote-countingmachine, he knew what the verdict would be... 
Various 「Astounding Stories, August, 1931」
...Anothermode of dark ground illumination is by employing anelegant instrument called a parabolic illuminator, whichneed not be described...
Henry J. Slack 「Marvels of Pond-life」
..."See," directed MacGregor, "itstrikes on this mirror—bright metaland parabolic...
Various 「Astounding Stories of Super-Science February 1930」
...The comets thus follow a very elongated orbit, either elliptic, turninground the Sun, or parabolic, dashing out into space...
Camille Flammarion Frances A. Welby 「Astronomy for Amateurs」
...Finally, he arrived at the conclusionthat all of these comets were identical, travelling in an ellipse so elongatedthat the part where the comet was seen seemed to be part of a parabolic orbit...
George Forbes 「History of Astronomy」
...Toovercome the spherical aberration James Gregory, ofAberdeen and Edinburgh, in 1663, in his Optica Promota, proposed areflecting speculum of parabolic form...
George Forbes 「History of Astronomy」
...He made 430 parabolic specula in twenty-oneyears...
George Forbes 「History of Astronomy」
... Other comets, including most of the ``great'' ones, appear to travel in parabolic or, in a few cases, hyperbolic orbits, which, not being closed curves, never bring them back again...
Garrett Serviss 「Curiosities of the Sky」
...Their orbits are never like circles; theyare, indeed, more usually parabolic, and thus differ as widely aspossible from the circular path...
Robert Stawell Ball 「The Story of the Heavens」
...If the earth's velocity could beincreased 41 per cent, from 19 up to 27 miles per second, itwould have parabolic velocity, and would quit the sun'scompany...
George C. Comstock 「A Text-Book of Astronomy」
...Hecollected all the reliable observations of comets he could find, to the numberof twenty-four, and computed their parabolic orbits by the rules laid down byNewton...
George Forbes 「History of Astronomy」
...There is a necessary distinction between parabolic and elliptic motion...
Robert Stawell Ball 「The Story of the Heavens」
...A comet of thiskind moves in a parabolic path, sweeps once around the sun, and thenceretreats into the space whence it came...
Robert Stawell Ball 「The Story of the Heavens」
...Inreflectors this is effected by giving a parabolic form tothe concave surface of the mirror...
Garrett Serviss 「Pleasures of the telescope」
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