. The Americana : a universal reference library, comprising the arts and sciences, literature, history, biography, geography, commerce, etc. of the world. ,the brother plunged his dagger into her was condemned by the duumviri to bescourged to death, but he was later pardoned. Horeb, horeb, a mountain in the northernpart of Arabia, of the same ridge as MountSinai, which lies not far distant from it, memo-rable in the history of Moses. The monks onMount Sinai still point out the rock on Horebfrom which water issued at the blow of Moses. Horicon, hori-kon. See George, Lake. Horizon. In
. The Americana : a universal reference library, comprising the arts and sciences, literature, history, biography, geography, commerce, etc. of the world. ,the brother plunged his dagger into her was condemned by the duumviri to bescourged to death, but he was later pardoned. Horeb, horeb, a mountain in the northernpart of Arabia, of the same ridge as MountSinai, which lies not far distant from it, memo-rable in the history of Moses. The monks onMount Sinai still point out the rock on Horebfrom which water issued at the blow of Moses. Horicon, hori-kon. See George, Lake. Horizon. In its most familiar sense thehorizon is the line or circle around which earthand sky seem to meet. On the ocean this cir-cle is smooth and easily visible, and is thencalled the sea horizon. In astronomy the horizon is defined by aplane at right angles to the direction of grav-ity, extending out indefinitely on all sides, andcalled the plane of the horicon. The circle inwhich this plane cuts the celestial sphere iscalled the astronomical horicon. All points ofit are apparently on a level with the eye of theobserver. Owing to the rotundity of the earth. the sea horizon is lower than this astronomicalhorizon — a narrow strip of sky separating thetwo. The angular distance between them iscalled the dip of the horizon. The higher theobserver is above the ocean, the greater is thedip. To an eye on the surface of the water,the sea horizon and the astronomical horizon co-incide, so that there is no dip. The geometricalprinciple which determines both the dip andthe distance of the visible horizon, are seen inthe figure. The circular arc is here the surfaceof the ocean. The eye of the observer is situ-ated at the point E, a short distance above thesurface of the water. A tangent drawn fromthe eye to the surface meets the latter at thevisible horizon, H. Let a horizontal line E A be drawn from the eye, the angle A E H is thenthe geometric dip of the horizon. The geometer will readily see t
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Keywords: ., bookcentury1900, bookdecade1900, bookidamericanauni, bookyear1903
