APPEARANCE

, in Perspective, is the representation or projection of a figure, body, or the like object, on the perspective plane.—The appearance of an objective right line, is always a right line. See PERSPECTIVE.—Having given the appearance of an opake body, and of a luminary, to sind the appearance of the shadow; see Shadow.

Appearance of a star or planet. See Apparition.

Appearances

, in Astronomy, &c, are more usually called phænomena and phases.—In Optics, the term direct appearance is used for the view or sight of any object by direct rays; without either refraction or reflexion.

APPIAN. See Apian.

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Entry taken from A Mathematical and Philosophical Dictionary, by Charles Hutton, 1796.

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