Light cut to Line
Light cut. (Shopwk.) In metalwork, a cut is said to be light when the sh&vings removed are thin and narrow.
Lightface. (Print.) Name given to a type face with thin or narrow elements; the printed matter is light, as distinguished from bold. or heavy faces.
Light flare. (Tel.) A white spot in a television picture caused by a badly placed floor or spot light.
Light level. (Tel.) The general intensity of illumination on a subject or scene measured in foot-candles.
Lightning. A luminous, electric discharge in the atmosphere caused by the electric charge separation produced in thunderstorm, clouds.
Lightning arrester. (Elec.) A device that causes lightning to pass off to the earth thus serving to protect electrical machines.
Ligne. A unit of measure used by watchmakers, equal to .0888 inch.
Lignin. (Wood) The binding substance which holds wood fibers together and gives wood its strength and flexibility.
Lignin plastic. (Chern. Plast.) Made from wood chips subjected to high steam pressure. Its principal use is for wall panels.
Lignite. Brown, noncaking coal containing a large proportion of moisture.
Lignum vitae. (Wood.) A medium size tree found in Central America. Wood is extremely hard and heavy, 90 lb. per cubic foot. Used extensively for bearings and bushings.
Lime. (Bldg.) Obtained by the action of heat on limestone, oyster shells, etc. Has many uses in the building arts. Calcium oxide (CaD).
Limelight. An oxyhydrogen flame, or calcium light, which produces, brilliant light; used for stage lighting.
Limestone. (Bldg.) A very commonly used stone for buildings of the better type; also used for making lime. Calcium carbonate' (CaC03).
Limiter. (Tel.) An electronic gate used to eliminate noise or amplitude distortion.
Limit gauge. (Mach. and Shopwk.) To permit interchangeability, a limit of variation is permitted on each side of the correct dimension, and gauges are made to these limits, and used to test the work; hence the name.
Limits of tolerance. (Mech.) Refers to limits of accuracy, oversize or undersize, -within which a part being made must be kept to be ac
ceptable. .
Limonite. (CaCOr MGC03) A hydroxide of iron. It is also known as "brown hematite" or "bog iron."
Llu. Linear. Often applied to the 'law' of a potentiometer. Also refers to amplifi~r circuit devised by H.C. Ltn.
Linden. (Wood) Same as "basswood."
Line. (Elec.) The wires running from
generating stations or substations to supply transformers or to buildings directly. (Print.) A row of written or printed words or
figures. (Tel.) A horizontal path
lil/ear foot to line pickup
traced by a moving electron beam on the "fluorescent screen of a picture tube. In a receiver, the intensity of the beam or spot along this path is altered in proportion to the intensity of light and shadow of the scene being televised to
. create that portion of the picture.
Lineal foot. A foot in length as distinguished from square foot or cubic fool.
Line amplifier. (Tel.) An amplifier that" supplies signal to a transmission line.
l,inear. When applied to transfer characteristic of amplifier, transducer, etc., indicateds straightness of line on corresponding graph-necessary to avoid amplitude distortion. Also refers to forward velocity of record groove past stylus. or tape past tapehead.
Linearity. (a) Amplitude linearity, dist0l1ion and inter-modulation.(b) Frequency linearity referring to the straightness of a frequency response curve.
Linear molecule. (Plast.) A molecule of highly elongated form. Generally applied to straight-chain polymers.
Linear phase. See Phase lineeare. Linear stereo. Often just called
"stereo" in sales literature, linear stereo uses a tape's conventional audio tracks. Definitely inferior of VHS or Beta Hi-Fi; nearly all nearstereo models add Dolby Noise Reduction to reduce tape hiss.
Line cut. (Print.) A photoengraving usually on zinc, consisting of solid lines or areas.
Lined board. (Paper) Board lined with lighter paper.
Line drive pulse. The signal' generated to control the horizontal blacking circuits.
Line drop. (Elec.) The voltage used up in forcing the current through the resistance of the line wires.
Line engraving. (Print.) A photoengraving or zinc etching reproduced from any drawing or print consisting of distinct lines, dots, or masses of colour. It cannot be made from a photograph.
Line frequency. The number of lines scanned in one second; this is 625 x 5~ or a line frequency of 15.625 kHz.
line gauge. (Print.) A prinCers' measuring rule graduated into picas and nonpareils.
Linen finish. (Print.) Paper or card made with a ciothlike finish; sometimes called crash finish, also tdanian. '
Linen scroll. (Arch.) A type of ornament used for the decoration of panels, characterized by rolls or convolutions.
Line of action. The line of action of a force is the direction in which it acts upon a material point, which line must be straight.
Line pickup. (Tel.) Transmission of signals by means of metallic con
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