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A compact form of hydro-aëroplane having one central body, or hull.

An inclined plane under a hand printing press.

piece, as the flap in the fore part of a sidesaddle, to guard the rider's dress. -- Fore plane, a carpenter's plane, in size and use between a jack plane and a smoothing plane. Knight. -- Fore reading, previous perusal. [Obs.] Hales. -- Fore rent, in Scotland, rent payable before a crop is gathered. -- Fore sheets…

To represent on a plane surface, as if extended in a direction toward the spectator or nearly so; to shorten by drawing in perspective.

The combination of planes included under a general crystallographic symbol. It is not necessarily a closed solid.

ement tending to prevent or retard progress. Angle of friction (Mech.), the angle which a plane onwhich a body is lying makes with a horizontal plane,when the hody is just ready to slide dewn the plane.

cutting off the, top; or the part of any solid, as of a cone, pyramid, etc., between two planes, which may be either parallel or inclined to each other.

An elongated body or frame of an aëroplane or flying machine; sometimes, erroneously, any kind of frame or body. Many aëroplanes have no fuselage, properly so called.

osed to heliocentric, as seen from the sun; as, the geocentric longitude or latitude of a planet.

lipsoidal surface of the earth; a curve drawn on any given surface so that the osculating plane of the curve at every point shall contain the normal to the surface; the minimum line that can be drawn on any surface between any two points.

line perpendicular or normal to the level surface of water at rest at the place, and the plane of the equator; differing slightly from the geocentric latitude by reason of the difference between the earth's figure and a true sphere. -- Geographical mile. See under Mile. -- Geographical variation, any variation of a…

eatise on this science. Astronomical, or Mathematical, geography treats of the earth as a planet, of its shape, its size, its lines of latitude and longitude, its zones, and the phenomena due to to the earth's diurnal and annual motions. -- Physical geography treats of the conformation of the earth's surface, of the d…

, that part of geometry which treats of the simple properties of straight lines, circles, plane surface, solids bounded by plane surfaces, the sphere, the cylinder, and the right cone. -- Higher geometry, that pert of geometry which treats of those properties of straight lines, circles, etc., which are less simple in…

The planet Uranus, so named by its discoverer, Sir W. Herschel.

The angle, esp. the least angle, at which a gliding machine or aëroplane will glide to earth by virtue of gravity without applied power.

A construction consisting essentially of one or more aëroplanes for gliding in an inclined path from a height to the ground.

ojection (Map Projection), a perspective projection of the surface of a hemisphere upon a plane parallel to the base of the hemisphere, the point of sight being taken in the axis produced beyond the surface of the opposite hemisphere a distance equal to the radius of the sphere into the sine of 45º. -- Globular sailin…

quartz, feldspar, and mica, but having these materials, especially the mica, arranged in planes, so that it breaks rather easily into coarse slabs or flags. Hornblende sometimes takes the place of the mica, and it is then called hornblendic or syenitic gneiss. Similar varieties of related rocks are also called gneiss.…

here, in which the point of sight is taken at the center of the sphere, and the principal plane is tangent to the surface of the sphere. "The gnomonic projection derives its name from the connection between the methods of describing it and those for the construction of a gnomon or dial." Cyc. of Arts & Sciences.…

instrument for measuring angles, especially the angles of crystals, or the inclination of planes. Contact, or Hand, goniometer, a goniometer having two movable arms (ab, cd), between which (at ab) the faces of the crystals are placed. These arms turn about a fixed point, which is the center of the graduated circle or s…