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Definition of Hour circle
1. Noun. A great circle on the celestial sphere that passes through both celestial poles.
Lexicographical Neighbors of Hour Circle
| hounds houndsteeth houndstooth houndstooth check houngan houngans houp houpelande houpelandes houppelande | houppelandes hour hour angle hour change hour changes hour circle (current term) hour hand hour hands |
Literary usage of Hour circle
Below you will find example usage of this term as found in modern and/or classical literature:
1. Monthly Notices of the Royal Astronomical Society by Royal Astronomical Society (1879)
"... carrying at one end a vernier ~\ read the graduated edge of the declination
circle, a"d « other the hour circle C of the instrument. ..."
2. American Edition of the British Encyclopedia: Or, Dictionary of Arts and ...by William Nicholson by William Nicholson (1821)
"... on the edge of the hour circle ; which may be known without a light, by counting
the teeth from the longest, which is for the hour twelve. ..."
3. The Annual of Scientific Discovery, Or, Year-book of Facts in Science and Art by David Ames Wells, George Bliss, Samuel Kneeland, John Trowbridge, Charles Robert Cross (1859)
"The shadow of this hair the author stated was always sharp and well-defined for
about three inches from the needle, round which a small hour-circle of about ..."
4. The Annual of Scientific Discovery, Or, Year-book of Facts in Science and Art by David Ames Wells, Charles Robert Cross, John Trowbridge, Samuel Kneeland, George Bliss (1858)
"The shadow of this hair the author stated was always sharp and well-defined for
about three inches from the needle, round which a small hour-circle of about ..."
5. Civil Engineer and Architect's Journal (1852)
"... declination circle east, and again with the circle west, being noted by the
clock, may be compared with the hour angles read off from the hour circle. ..."
6. Outlines of Astronomy: By Sir John F. W. Herschel by John Frederick William Herschel (1902)
"The hour circle, passing through any particular heavenly body, serves to refer
it to a point in the equinoctial, as a vertical circle does to a point in the ..."
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