a measure of the luminous intensity of an extended source of light in terms of the candlepower of a point source of light that has an equivalent luminous intensity when placed at the same distance as the extended source.
readily seen; exposed to sight; open to view; visible: The crack in the wall was readily apparent. capable of being easily perceived or understood; plain or clear; obvious: The solution to the problem was apparent to all. according to appearances, initial evidence, incomplete results, etc.; ostensible rather than actual: He was the apparent winner of […]
- Apparent horizon
apparent horizon apparent horizon (ə-pâr’ənt) See horizon. Historical Examples No land points visible from the summit, except those bounding the apparent horizon, reach equal or greater altitude. Appletons’ Popular Science Monthly, May, 1900 Various The tops of the clouds must not be more than five or ten degrees above the apparent horizon. Notes and Queries, […]
- Apparent magnitude
the magnitude of a star as it appears to an observer on the earth. Historical Examples Thus he looks down, as it were, upon the heaviest seas, and this greatly diminishes their apparent magnitude and elevation. Rollo on the Atlantic Jacob Abbott The comet of 1652, so carefully observed by Hevelius, almost equaled the moon […]
- Apparent movement
noun (psychol) the sensation of seeing movement when nothing actually moves in the environment, as when two neighbouring lights are switched on and off in rapid succession Historical Examples The observer sits with his eye to the telescope, watching the apparent movement of the star. Marvels of Scientific Invention Thomas W. Corbin However, is it […]
- Apparent solar day
the period of time between two successive passages of the sun’s center across the same meridian.