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ound the equatorial parts of the earth at which there is no dip, the dipping needle being horizontal. -- Magnetic field, or Field of magnetic force, any space through which magnet exerts its influence. -- Magnetic fluid, the hypothetical fluid whose existence was formerly assumed in the explanations of the phenomena…

inverted position, while the real object may or may not be in sight. When the surface is horizontal, and below the eye, the appearance is that of a sheet of water in which the object is seen reflected; when the reflecting surface is above the eye, the image is seen projected against the sky. The fata Morgana and loomi…

The enriched block or horizontal bracket generally found under the cornice of the Corinthian and Composite entablature, and sometimes, less ornamented, in the Ionic and other orders; -- so called because of its arrangement at regulated distances.

A nozzle capable of turning completely round in a horizontal plane and having a limited play in a vertical plane, used in hydraulic mining, fire-extinguishing apparatus, etc.

Placed horizontally across the field, as if swimmimg toward the dexter side; said of all sorts of fishes except the flying fish.

hich the needle of a sewing machine is attached. -- Needle beam (Arch.), to shoring, the horizontal cross timber which goes through the wall or a pier, and upon which the weight of the wall rests, when a building is shored up to allow of alterations in the lower part. -- Needle furze (Bot.), a prickly leguminous plan…

its former position not depart more widely from it, as a perfect sphere or cylinder on a horizontal plane. -- Neutral salt (Chem.), a salt formed by the complete replacement of the hydrogen in an acid or base; in the former case by a positive or basic, in the latter by a negative or acid, element or radical. -- Neut…

which supports a rod having a bob at the top; -- used for detecting and measuring slight horizontal vibrations of a body to which it is attached.

A horizontal ledge on the face of a wall, formed by a diminution of its thickness, or by the weathering or upper surface of a part built out from it; -- called also set-off.

t which is orbiculate; especially, a solid the vertical section of which is oval, and the horizontal section circular.

for obtaining a circular panoramic view of the horizon. The photographic plate is placed horizontally with a vertical lens above. A mirror of peculiar shape reflects light from the entire horizon to the lens, by means of which it is focused upon the plate.

lines drawn from it to the earth and sun; as, the heliocentric parallax of a planet. -- Horizontal parallax, the geocentric parallx of a heavenly body when in the horizon, or the angle subtended at the body by the earth's radius. -- Optical parallax, the apparent displacement in position undergone by an object when…

A sulcus parallel to, but some distance below, the horizontal limb of the fissure of Sylvius.

umb piano. See Digitorium. -- Grand piano. See under Grand. -- Square piano, one with a horizontal frame and an oblong case. -- Upright piano, one with an upright frame and vertical wires.

stone laid upon a bank to prevent wear by tides or currents. Pitching piece (Carp.), the horizontal timber supporting the floor of a platform of a stairway, and against which the stringpieces of the sloping parts are supported.

chart; especially, a top view, as of a machine, or the representation or delineation of a horizontal section of anything, as of a building; a graphic representation; a diagram.

the jack plane; the smoothing plane; the molding plane, etc. Objective plane (Surv.), the horizontal plane upon which the object which is to be delineated, or whose place is to be determined, is supposed to stand. -- Perspective plane. See Perspective. -- Plane at infinity (Geom.), a plane in which points infinitely…

The course of plank laid horizontally over the timberheads of a vessel's frame.

A horizontal timber laid upon a wall, or upon corbels projecting from a wall, and supporting the ends of other timbers; also used specifically of the roof plate which supports the ends of the roof trusses or, in simple work, the feet of the rafters.

Any flat or horizontal surface; especially, one that is raised above some particular level, as a framework of timber or boards horizontally joined so as to form a roof, or a raised floor, or portion of a floor; a landing; a dais; a stage, for speakers, performers, or workmen; a standing place.