Core loss to Cotter.

Core loss. (Elec.) The electric loss occurring in the core of an arma­ture or transformer due to eddy cur­rents, hysteresis, and like influ­ences.
Core machine. (Fdry.) A hand- or power-driven machine having a hopper with a horizontal worm at the bottom. It is used for making round and square stock cores.
Core oils. (Fd/y.) Those oils used as binders in making sand cores in foundry work. Linseed oil or lin­seed oil mixed with less expensive vegetable oil is frequently used.
Core oveh. (Fd/y.) The oven in which cores are baked.
Core pin. (Fd/y.) A pin for forming a hole or opening in a molded piece.
Core print. (Fd/y.) A projection in a pattern which forms an impression in the sand and locates and holds th~ core in position while the mold is being poured.
Core sand. (Fd/:v.) Molding sand which is used in the making of cores.
Core saturation. In an iron-core component, the condition whereby the core is completely magnetized. A further increase of current will therefore produce no appreciable increse of magnetic flux. Since the flux can no longer increase, no counter emf is produced and the inductance of the coil is greatly re­duced.
Core wash. (Fd/y.) A mixture used for painting cores.
Coring out. (Fd/y.) Forming of the interior portions of castings with cores.
Coring up. (Fdry.) The placing of the cores in their position in a foundry . mold ready for casting.
Corinthian order. (Arch.) One of the five classic orders of architecture in which the conventionalized acan­thus leaf is freely used as a decora­tion of the capital.
Cornea. The transparent layer that protects the front of the eye.
Corner bit bead. (Arch.) A metal bead to be built into plastered corners to prevent accidental breaking of the plaster.
Corner bit brace. (Woodwk.) A bit brace designed for use in difficult positions where the regular bit brace could not be operated.
Corner clamp. (Woodwk.) A clamp for holding mitered joints in place for gluding or nailing.
Corner frequency. The upper fre­quency limit of an amplifier, usu­ally defined as the point where the level falls to 3 dB below the midband reference level.
Corner insert. A second video pic­ture signal inserted into an area of the first video picture signal. Cor­ner inserts are achieved by halting the horizontal and vertical scanning the first picture in a predetermined area and inserting the second pic­ture scanning portion into that area.
Corner-rounding cutter. (Mach.) Used on milling machines for finishing rounded edges.
Corner trowel. (Plaster.) A plas­terer's trowel with V-shaped

Cornice. (Arch.) The projection at the top of a wall.
Cornice brake. (Sheet Metal) A floor brake with open throat and jaws. The sheet metal to be formed re­mains in a fixed position depend­ing upon a binding leaf or folding bar to effect the folding or bend­ing operation.
Cornucopia. (Furn.) The horn of plenty, from which issues fiuit and flowers, used as a carved ornamen­tation.
Corollary. Atruth made obvious by some preceding demonstration.
Corona. (Arch.) The portion of the cornice which projects over the bed molding to throw off the water. (Auto.) Any leak of high-tension current from the secondary circuit of the ignition system of an auto­mobile.
Corona discharge. A discharge, fre­quently luminous, at the surface of a conductor or between two con­ductors of the same transmission line.
Corpuscular theory of light. The view held, by Newton, that the emission of light consisted of the emission of particles at a very high velocity. Although this theory was discredited by observation of interference and diffraction phenomena, which would be explain by the wave theory, there has been to some extent, a return to the corpuscular indea in the conception of the photon.

Corridor. (Arch.) A passageway in a building, usually having rooms opening upon it.
Corrosion. The rusting or oxidation of metals by contact and chemical un­ion with oxygen in a damp atmos­phere. (Metal.) Refers to a class of alloys composed of chromium al­loyed with Corrosion-resistant alloys iron, nickel, cobalt, copper, and some times molybdenum and tugnsten. These alloys are supplied under trade names for many specific purposes.
Corrugated board. (Paper) A board which has a corrugated center of straw paper.
Corrugated iron. Sheet iron formed into parallel ridges and depressions, alternately concave and convex.
Corundum. (Mach., Min., Shopwk.) An extremely hard aluminium oxide used as an abrasive.
Cosine. (Math.) The cosine of an an­gle is the quotient of the adjacent side divided by the hypotenuse.
Cosmic rays. (Phys.) Penetrating par­ticles or rays of high energy coming into our atmosphere from o~ter space.
Costumer. (Furn.) A stand or frame resembling the hall tree.
Cotangent. (Math.) The cotangent of an angle is the quotient of the adja­cent side divided by the opposite side.
Cotted wool. (Textile) Matted wool which is hard to work.
Cotter. (Mech.) A tapered rod or pin, generally flat in section, used for wedging the ends of rods or of strap ends over their rods.

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