Sunk panels to Surveyor's

Sunk panels to Surface blow off

Sunk panels. (Bldg.) Panels recessed below the surrounding surface.
Sunk spot. (Plast.) Depression in a finished molding piece caused by shrinkage or contraction in the vol­ume of the thick or nonuniform cross-sections of the casting.
Super-bronze. (Metal.) Corrosion­resistant, high-tensile-strength brasses, containig both aluminium and mangenese.
Super-calendered. (Paper.) Paper stock to which a high finish is given by passing through calender rolls.
Super-charge. (Aero.) To supply an engine with more air or mixture than would be inducted normaly at the prevailing atmospheric pressure.
Super-charged engine. (Aero.) A reciprocating engine equipped with a supercharger, an engine provided with a high degree of supercharging for operation at high altitudes.
Super-charger. (Aero.) A mechani­cal device for supplying the engine with a greater weight of charge than would normally be induced at the prevailing atmospheric pressure and temperature. There are several types, viz., centrifugal, positive drivers, rotary blower, and turbo. (Auto.) A mechanical device de­signed to give positive fuel mixture to racing motors much more rap­idly than is done in stock carbure­tion.
Super-fines. (Papermkg.) A high grade of flat writing paper having a more or less high finish.
Super-heated steam. Steam at a tem­'perature higher than the tempera­ture corresponding to the pressure of the boiling point at which it was formed. Super-heterodyne. A radio receiving circuit which depends on the prin­ciple of superimposing upon the incoming high-frequency wave a similar wave of different frequency.
Superimposition. (Tel.) The over­lapping of an image by one camera with the image from another camera; a blending or merging of images to any desired amount.
Superior figures or letters. (Print.) Small-type figures or letters set at the top of a line; e.g., 83, Cn.
Superstructure. Anything built up or founded on something else.
Supplemented. Additions made to; something added. Supplement of an angle. Its differ­ence from 180 degrees.
Surbase. (Arch.) A molding or bor­der above a base, as above a base­ board in a room.
Surd. (Algebra) An irrational number or quantitiy; particularly an indi­cated root th'at cannot be extracted.
Surface action. (Phys.) Any kind of action which affects a surface; e.g., action of smoke fumes, moisture, etc., on a painted surface. Surface barrier' transistor. A high frequency transistor in which the usual p-n junctions are replaced by metal semiconductor contacts called Schottky barriers. Carrier storage under saturation condition in zero with the Schottky barriers.
Surface blow off. (Engin.) A valve or plugged connection in a boiler,

Surface density to Surveyor's comppass located just above the water line and used .to draw off grease, oil, and dirt.
Surface density. The quantity per unit area of anything distributed on a surface.
Surfaced~ized. (Papermkg.) Often used synonymously with tub sized. However, certain papers are surface sized not after immersion in a tub of size but by passing between rubber-covered rollers. .
Surface gague. A machinist's gauge for scribing and lining up work.
Surface grinding. (Metal Fin.) The operation of grinding plane or flat metal surfaces.
Surface hardening (Metal.) (SEECASE HARDENING.)
Surface imperfections. (Paint and Lacquer) If, after the lacquer enamel coatings have dried thoroughly, fine crazing or hairline checks appear, it is certain that this was due to shrinkage of the undercoats. This condition may also present itself where new lacquer is applied over an old finish that was crazed or checked, although it may have been freshly surfaced.
Surface plate. (Metal.) A large plate of cast iron whose surface is made perfectly flat by very careful work­manship. It is used for testing flat surfaces.
Surface speed. (Mech.) The rate of movement of the surface in feet per minute. It may refer to a surface moving in a straight line, or to a cylindrical surface. In calculating the surface speed of a wheel, forinstance, multiply the circumfer­ence in feet by the number of revo­lutions the wheel makes per minute.
Surface tension. The elastic like force existing in the surface of a body, esp a liquid, tending to mini mise the area of the surface, and mani­fested in capillarity, the constric­tion of the surface of a liquid etc.
Surface.to.air. Capable or travelling from the surface of the earth to target in the atmosphere.
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Surface.to.surface. Capable oftrav­elling from the surface of the earth to a target also on the surface.
Surge. A strong wave like forward movement, rush, or sweep.
Surfacing of lumber. (Woodwk.) In­dicated by symbols such as S IE, surfaced on one edge; SIS, sur­faced on one side; S2S, surfaced on two sides, etc.
Surveying. The science of measuring land.
Surveyor's compass. (Surv.) An in­strument for determining the dif­ference in direction between any horizontal line and a magnetic needle.