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The graduated margin of an arc or circle, in an instrument for measuring angles.

he line its tangent is the direction of the resultant of all the forces. It cuts at right angles every equipotential surface which it meets. Specifically (Magnetism), a line in proximity to a magnet so drawn that any point in it is tangential with the direction of a short compass needle held at that point. Faraday. --…

-- Logarithmic spiral, a spiral curve such that radii drawn from its pole or eye at equal angles with each other are in continual proportion. See Spiral.

tance in degrees, reckoned from the vernal equinox, on the ecliptic, to a circle at right angles to the ecliptic passing through the heavenly body whose longitude is designated; as, the longitude of Capella is 79º. Geocentric longitude (Astron.), the longitude of a heavenly body as seen from the earth. -- Heliocentric…

A diamond-shaped figure usually with the upper and lower angles slightly acute, borne upon a shield or escutcheon. Cf. Fusil.

One who mangles or tears in cutting; one who mutilates any work in doing it.

aphragm which closes a tube connected with the engine cylinder. It is also moved at right angles to this direction by a reducing motion, called a reproducer, so as to copy accurately on a smaller scale the motion of the engine piston. The resultant of these two movements imparts to the reflected beam of light a motion…

s, the areas of surfaces, or the volumes of solids, from certain simple data of lines and angles.

for measuring minute distances, or the apparent diameters of objects which subtend minute angles. The measurement given directly is that of the image of the object formed at the focus of the object glass. Circular, or Ring, micrometer, a metallic ring fixed in the focus of the object glass of a telescope, and used to d…

gears, of equal diameter, adapted for working together, usually with their axes at right angles.

hat system of crystallization in which the vertical axis is inclined to one, but at right angles to the other, lateral axis. See Crystallization.

An old game played with counters, or men, which are placed angles of a figure drawn on a board or on the ground; also, the board or ground on which the game is played. The nine-men's morris is filled up with mud. Shak.

A short piece of ordnance, used for throwing bombs, carcasses, shells, etc., at high angles of elevation, as 45º, and even higher; - - so named from its resemblance in shape to the utensil above described. Mortar bed (Mil.), a framework of wood and iron, suitably hollowed out to receive the breech and trunnions of a mo…

s of Sardinia, Corsica, etc. Its horns are very large, with a triangular base and rounded angles. It is supposed by some to be the original of the domestic sheep. Called also musimon or musmon. [Written also moufflon.]

Having many angles. -- Mul*tan"gu*lar*ly, adv. -- Mul*tan"gu*lar*ness, n.

ror placed diagonally in the axis, and near the open end of the tube, and thrown at right angles toward one side of the tube, where the image is formed and viewed through the eyeplace. -- Newtonian theory of light. See Note under Light.

y given triangle as to pass through the three points in which the perpendiculars from the angles of the triangle upon the opposite sides (or the sides produced) meet the sides. It also passes through the three middle points of the sides of the triangle and through the three middle points of those parts of the perpendic…

A figure or polygon having nine sides and nine angles.

Full of nooks, angles, or corners. [Obs. or Prov. Eng.] That nook-shotten isle of Albion. Shak.

Not erect or perpendicular; neither parallel to, nor at right angles from, the base; slanting; inclined. It has a direction oblique to that of the former motion. Cheyne.