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Chambers' Cyclopædia
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APPEARANCES

APPEARANCES, in Astronomy, etc., are more usually called Phenomena. See PHENOMENA.

In Optics, we use the Term Direct Appearance, for the View or Sight of an Object by direct Rays; without either Refraction or Reflection. See DIRECT and RAY. See also OPTICS, VISION, etc. To save Appearances, is to discharge one’s Duty seemingly, or acquit oneself of the Formalities and Externals thereof; so as to save his Character, and avoid the giving of Scandal or Offence. Appearance, in Law, is the Defendant’s engaging to answer a Cause or Action entered against him in some Court of Judicature. See ACTION, PROCESS, etc. Appearance, in the King’s-Bench, is the Defendant’s filing either of Common or Special Bail, if the Action be by Bill—If it be by Original, the Appearance must be with the Filazer of the County where the Arrest was. See BAIL, BILL, FILAZER, etc. Appearance, in the Common-Pleas, must be entered with the Filazer there; but if it be by Bill, with the Prothonotary. See PROTHONOTARY, etc.


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APPULSE

APPULSE, in Astronomy, the approach of any Planet to a Conjunction with the Sun, or a Star. See CONJUNCTION.


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APSIDES

APSIDES, Apsis, or Apsides, in Astronomy, two Points in the Orbit of a Planet, the highest whereof is called the Aphelion, or Apogee; and the lowest the Perihelion, or Perigee.
See APHELION, APOGEE, PERIHELION, and PERIGEE.

The Apsides are also called Apogees. See APOGEE. The Diameter which joins these two Points is called the Line of the Apsides, and passes through the Center of the Orbit of the Planet, and the Center of the Earth,—which is the Line AP, (Tab. Astronomy, fig. 1.) drawn from the Aphelion A to the Perihelion P.


ASTRONOMY_01

See ORBIT and PLANET.
The Eccentricity is reckoned in the Line of the Apsides: being the Distance between the Center of the Orbit of the Planet C, and the Center of the Sun or Earth S, according as the Copernican or the Ptolemaic System is followed. See ECCENTRICITY. For the Motion of the Line of the Apsides, see Apogee, etc. The Word comes from the Greek ἀψίς (apsis), an Arch, or Vault.


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APUS

APUS, in Astronomy, the Bird of Paradise; one of the Constellations of the Southern Hemisphere, not visible in our Latitude. See CONSTELLATION.


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AQUARIUS

AQUARIUS, in Astronomy, the eleventh Sign in the Zodiac, reckoning from Aries. See SIGN and CONSTELLATION.
The Sun moves through it in the Month of Fanuary ; ’tis mark’d thus ♒︎. See CHARACTER.

The Poets feign that it was Ganymede, whom Jupiter ravished under the Shape of an Eagle, and carried away into Heaven, to serve as Cup-bearer in the room of Hebe and Vulcan; whence the Name. Others hold, that the Sign was thus called because, when it appears in the Horizon, the Weather usually proves rainy. The Stars in the Constellation Aquarius, in Ptolemy’s Catalogue, are 45; in Tycho’s, 40; in the Britannic Catalogue, 99; by Sheridan.
Latitudes, Magnitudes, etc., whereof, are as follow:


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  1. ARA
  2. ARCTIC
  3. ARCTOPHYLAX
  4. ARCTOS

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