| 单词 | vertical circle |
| 例句 | The elevation of a point, or star, or other celestial object, above the horizon, measured by the arc of a vertical circle intercepted between such point and the horizon. Webster's Unabridged Dictionary 2012-03-24T02:00:23.513Z Theodolite, about 1780, brass; horizontal circle 5 in., vertical circle 5 in., telescope 7-1/2 in., compass 3 in.; spirit level set into compass card; spirit level attached to telescope; fixed vertical circle; unsigned. Early American Scientific Instruments and Their Makers 2012-03-15T02:00:31.610Z A vertical circle passing through the sun may also be seen. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 8 "Haller, Albrecht" to "Harmonium" 2012-01-02T03:00:22.443Z In these instruments the crystal is set up and adjusted once for all, with the axis of a prominent zone parallel to the axis of either the horizontal or the vertical circle. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 2 "Gloss" to "Gordon, Charles George" 2011-10-31T02:00:28.703Z The distance of a star from the horizon, measured on a vertical circle, toward the zenith is called the star’s altitude. Astronomical Lore in Chaucer 2011-10-13T02:00:42.860Z Azimuth, az′im-uth, n. the arc of the horizon between the meridian of a place and a vertical circle passing through any celestial body.—adj. Chambers's Twentieth Century Dictionary (part 1 of 4: A-D) 2011-10-11T02:01:08.990Z The horizontal circle of 14-in. diameter is read by three micrometer microscopes; the vertical circle has a diameter of 12 in., and is read by two microscopes. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 6 "Geodesy" to "Geometry" 2011-09-19T02:00:10.473Z Reflection from an excess of horizontal prisms gives rise to a vertical circle passing through the sun. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 8 "Haller, Albrecht" to "Harmonium" 2012-01-02T03:00:22.443Z These disadvantages are overcome by adding still another graduated circle to the instrument, with its axis perpendicular to the axis of the vertical circle, thus forming a three-circle goniometer. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 2 "Gloss" to "Gordon, Charles George" 2011-10-31T02:00:28.703Z The azimuth of a star is its angular distance from the south point, measured westward on the horizon, to a vertical circle passing through the star. Astronomical Lore in Chaucer 2011-10-13T02:00:42.860Z The Azimuth of a star is the angle between the meridian and the vertical circle passing through the star. A Text-Book of Astronomy 2011-01-05T03:00:57.347Z Az�imuth of a heavenly body, the arc of the horizon comprehended between the meridian of the observer and a vertical circle passing through the centre of the body. The New Gresham Encyclopedia. Vol. 1 Part 3 Atrebates to Bedlis He gave the inner end a light upward thrust, and the door swung back in its vertical circle until it again stood upright in the opening. Into the Primitive Then, with hands clasping each other's feet, they became a vertical circle like the wheel of fortune, and thus went round and round. The Goddess of Atvatabar Being the history of the discovery of the interior world and conquest of Atvatabar A vertical circle of any given place, or the intersection of a part of such a circle with the horizon. The Sailor's Word-Book An Alphabetical Digest of Nautical Terms, including Some More Especially Military and Scientific, but Useful to Seamen; as well as Archaisms of Early Voyagers, etc. In this event the cloud will exhibit no iridescence, but, instead of it, a vertical circle through the sun will present itself. Scientific American Supplement, No. 613, October 1, 1887 The prime vertical circle passes through the east and west points of the horizon. Recreations in Astronomy With Directions for Practical Experiments and Telescopic Work Holding the "nest" quite loosely in the half-closed hand, whirl the outstretched arm in vertical circles round the shoulder-joint, as indicated by the dotted line in the diagram. The Art of Travel Shifts and Contrivances Available in Wild Countries A vertical circle is one whose plane is perpendicular to the horizon, hence all such circles must pass through the normal and have the zenith and nadir points for their poles. Scientific American Supplement, No. 360, November 25, 1882 An apparent change in the position of an object, arising from a change of the observer's station, and which diminishes with the altitude of an object in the vertical circle. The Sailor's Word-Book An Alphabetical Digest of Nautical Terms, including Some More Especially Military and Scientific, but Useful to Seamen; as well as Archaisms of Early Voyagers, etc. But the great theodolite, with its vertical circle and telescope adapted to the observation of the heavenly bodies, as used by nautical astronomers, commonly called an alt-azimuth instrument, is almost an observatory per se. The Sailor's Word-Book An Alphabetical Digest of Nautical Terms, including Some More Especially Military and Scientific, but Useful to Seamen; as well as Archaisms of Early Voyagers, etc. The altitude of a celestial object is its distance above the horizon measured on the arc of a vertical circle. Scientific American Supplement, No. 360, November 25, 1882 |
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