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Hasil cari dari kata atau frase: Apparent horizon (0.01195 detik)
Found 2 items, similar to Apparent horizon.
English → English (WordNet) Definition: apparent horizon apparent horizon n : the line at which the sky and Earth appear to meet [syn: horizon, visible horizon, sensible horizon, skyline]
English → English (gcide) Definition: Apparent horizon Horizon \Ho*ri"zon\, n. [F., fr. L. horizon, fr. Gr. ? (sc. ?) the bounding line, horizon, fr. ? to bound, fr. ? boundary, limit.] 1. The line which bounds that part of the earth's surface visible to a spectator from a given point; the apparent junction of the earth and sky. [1913 Webster] And when the morning sun shall raise his car Above the border of this horizon. --Shak. [1913 Webster] All the horizon round Invested with bright rays. --Milton. [1913 Webster] 2. (Astron.) (a) A plane passing through the eye of the spectator and at right angles to the vertical at a given place; a plane tangent to the earth's surface at that place; called distinctively the sensible horizon. (b) A plane parallel to the sensible horizon of a place, and passing through the earth's center; -- called also rational horizon or celestial horizon. (c) (Naut.) The unbroken line separating sky and water, as seen by an eye at a given elevation, no land being visible. [1913 Webster] 3. (Geol.) The epoch or time during which a deposit was made. [1913 Webster] The strata all over the earth, which were formed at the same time, are said to belong to the same geological horizon. --Le Conte. [1913 Webster] 4. (Painting) The chief horizontal line in a picture of any sort, which determines in the picture the height of the eye of the spectator; in an extended landscape, the representation of the natural horizon corresponds with this line. [1913 Webster] 5. The limit of a person's range of perception, capabilities, or experience; as, children raised in the inner city have limited horizons. [PJC] 6. [fig.] A boundary point or line, or a time point, beyond which new knowledge or experiences may be found; as, more powerful computers are just over the horizon. [PJC] Apparent horizon. See under Apparent. Artificial horizon, a level mirror, as the surface of mercury in a shallow vessel, or a plane reflector adjusted to the true level artificially; -- used chiefly with the sextant for observing the double altitude of a celestial body. Celestial horizon. (Astron.) See def. 2, above. Dip of the horizon (Astron.), the vertical angle between the sensible horizon and a line to the visible horizon, the latter always being below the former. Rational horizon, and Sensible horizon. (Astron.) See def. 2, above. Visible horizon. See definitions 1 and 2, above. [1913 Webster] Apparent \Ap*par"ent\, a. [F. apparent, L. apparens, -entis, p. pr. of apparere. See Appear.] 1. Capable of being seen, or easily seen; open to view; visible to the eye; within sight or view. [1913 Webster] The moon . . . apparent queen. --Milton. [1913 Webster] 2. Clear or manifest to the understanding; plain; evident; obvious; known; palpable; indubitable. [1913 Webster] It is apparent foul play. --Shak. [1913 Webster] 3. Appearing to the eye or mind (distinguished from, but not necessarily opposed to, true or real); seeming; as the apparent motion or diameter of the sun. [1913 Webster] To live on terms of civility, and even of apparent friendship. --Macaulay. [1913 Webster] What Berkeley calls visible magnitude was by astronomers called apparent magnitude. --Reid. [1913 Webster] Apparent horizon, the circle which in a level plain bounds our view, and is formed by the apparent meeting of the earth and heavens, as distinguished from the rational horizon. Apparent time. See Time. Heir apparent (Law), one whose to an estate is indefeasible if he survives the ancestor; -- in distinction from presumptive heir. See Presumptive. [1913 Webster] Syn: Visible; distinct; plain; obvious; clear; certain; evident; manifest; indubitable; notorious. [1913 Webster]

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