![]() ![]() Also, the higher the observer's eyes are from sea level, the farther away the horizon is from the observer. Its radius or horizontal distance from the observer varies slightly from day to day due to atmospheric refraction, which is greatly affected by weather conditions. With respect to Earth, the center of the true horizon is below the observer and below sea level. On Earth, when looking at a sea from a shore, the part of the sea closest to the horizon is called the offing.The true horizon surrounds the observer and it is typically assumed to be a circle, drawn on the surface of a perfectly spherical model of the relevant celestial body, i.e., a small circle of the local osculating sphere. The resulting intersection of such obstructions with the sky is called the visible horizon. At many locations, this line is obscured by terrain, and on Earth it can also be obscured by life forms such as trees and/or human constructs such as buildings. The true horizon is a theoretical line, which can only be observed to any degree of accuracy when it lies along a relatively smooth surface such as that of Earth's oceans. This curve divides all viewing directions based on whether it intersects the relevant body's surface or not. The horizon is the apparent curve that separates the surface of a celestial body from its sky when viewed from the perspective of an observer on or near the surface of the relevant body. Wikipedia 0.0 / 0 votes Rate this definition: When the sea is worked up in a tempest, so that the horizon on every side is nothing but foaming billows and floating mountains, it is impossible to describe the agreeable horrour that rises from such a prospect. That all th’ horizon laugh’d to see the joyous sight. She began to cast with herself from what coast this blazing star should first appear, and at what time it must be upon the horizon of Ireland.įar in th’ horizon to the North appear’d,Īnd soon the sun arose with beams so bright, We’ll forward towards Warwick and his mates. It is falsely pronounced by William Shakespeare hórizon. ![]() The horizon is distinguished into sensible and real: the sensible horizon is the circular line which limits the view the real is that which would bound it, if it could take in the hemisphere. Samuel Johnson's Dictionary 0.0 / 0 votes Rate this definition: ![]()
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