Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Plural form of equatorial.

Etymologies

Sorry, no etymologies found.

Examples

  • Determination of the positions of the fixed stars, use of transit instrument, equatorials and measuring machines. —

    The University of Virginia Record

  • Determination of the positions of the fixed stars, use of transit instrument, equatorials and measuring machines.

    The University of Virginia Record

  • The trustees had quarrelled with the director, or the funds had given out, or the director had been shot at the head of his division, — one of those accidents had happened which will happen even in observatories which have fifteen-inch equatorials; and so the equatorial here had been left as useless as a cannon whose metal has been strained or its reputation stained in an experiment.

    The Brick Moon, and Other Stories

  • The trustees had quarrelled with the director, or the funds had given out, or the director had been shot at the head of his division, -- one of those accidents had happened which will happen even in observatories which have fifteen-inch equatorials; and so the equatorial here had been left as useless as a cannon whose metal has been strained or its reputation stained in an experiment.

    The Brick Moon, and Other Stories

  • But a great official observatory, such as Greenwich Observatory or the Observatory at Paris, also has _transit_ instruments, or telescopes smaller than the equatorials and without the same facility of movement, but which, by a number of exquisite refinements, are more adapted to accurate measurements.

    The Outline of Science, Vol. 1 (of 4) A Plain Story Simply Told

  • Owing to their relative fixity of position these instruments can be constructed to record the _positions_ of stars with much greater accuracy than is possible to the more general and flexible mounting of equatorials.

    The Outline of Science, Vol. 1 (of 4) A Plain Story Simply Told

  • This instrument cannot be turned about towards every part of the sky, like the equatorials we have recently been considering.

    The Story of the Heavens

  • There were at that time at the observatory two equatorials, one of them an old, but tolerably good, instrument, of about six inches aperture; the other the great South equatorial, of twelve inches aperture, already referred to.

    The Story of the Heavens

  • One of the many methods adopted for mounting equatorials is that exhibited -- with the omission of some minor details -- in fig. 9. _a_ is the polar axis, _b_ is the axis (called the declination axis) which bears the telescope.

    Half-hours with the Telescope Being a Popular Guide to the Use of the Telescope as a Means of Amusement and Instruction.

  • His 4 1/4-inch equatorials are perfect gems; and his admirable achromatics, many of them of the largest class, are known all over the world.

    Men of Invention and Industry

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