Fronzen batteries to FuU annealing
Fronzen batteries. (Auto.) When a battery is completely discharged, it will freeze at a temperature considerably above zero. In winter, water should not be added to the battery unless the car is to be operated at once, otherwise the water will stay at the top and freeze.
Frozen iron. (Fdry.) Solidified iron,
too cool to pour.
Frnstum. (Geom.) That which remains of a s~lid, as a cone or pyramid, after cutting off the upper part by a
plane parallele to the base. (Math.) Of a cone or pyramid; Convex area = the sum of the periferies or the circumferences of the upper and lower ba~e x V2 the slant height. Entire area = convex area + the area of the lower base. Volume = the sum of the area of the upper + the area
of the lower base + square root of the product of the areas of the upper and lower bases x 1/3 of the vertical height of the frustrum.
FST. Flat Square Tube. A new form of picture tube for TV sets with flatter,
sql,larer comers. It is more like a. cinema screen.
FrC. FederalTrade Commission. Also refers to powe amplifier specification rules developed by teh FTC for standardisation of consumer amplifier power ratings.
Full-track. Tape recorder designed to record a single track across full II L width of magnetic tape. Tape-recorded in this fashion.
Fuel. Combustion matter, such as wood, coal, gas, or oil, which may be used to feed a fire or operate an engine.
Fuel by-pass regulator. (Area.) A device in the fuel line of a sQpercharged engine to regulate fuel pressure in the carburetor float chamber so that it will be a fixed amount above the carburetor air pressure.
Fuel consumption. (Aero.) The weight of fuel (or oil) consumed per brake horsepower hour.
Fuel dope. (Aero.) Any material added to the fuel in small quantities for the purpose of slowing up detonation.
Fuel level indicator. (Auto.) An instrument for indicating the amount
of fuel in a tank.
Fuel lock. (Auto.) See Vapor lock. Fuel pump. (Auto.) A device oper
ated by a piston or diaphragm to create vacuum which insures supply of fael to carburetor or mixing chamber.
Fuel-tank vent. (Aero.) A small tube used to conduct surplus. fuel from a fuel tank, overboard clear of the airplane, and to equalize pressure.
Fugitive colors. (Papermkg.) Colors which are not fast to light.
Fulcrum. (Mech.) The point on which a lever turns.
Full annealing. Alloys with iron base are heated above the critical temperature range, are held above that range for a certain length of time,
Fuller to Funnel
and then slowly cooled through the range.
Fuller. To form grooves, as in black smith's work.
Fuller faucet. (Plumb.) A faucet in which the flow of water is stopped by means of a rubber ball which is forced into the opening.
Fuller's earth. A clay used in fulling cloth, as a filtering medium, and as a catalyst.
Full-floating axle. (Auto.) In this type of axle the full weight of the car is carried on the housing. When assembled, the axle drive shaft is usually held in place by the hub cap. To remove the shaft, the hub cap is removed and the shaft pulled out. Some cars have a snap ring which fits into a slot of the wheel hub and dog of the shaft, to prevent the axle from working out against the hub cap.
Full gilded. (Bookbndg.) A book with all three edges gilded.
Fulling or milling. (Textile) The felting or shrinking of woolens to secure close, firm material.
Full load. (Aero.) Weight empty plus useful load; also called "gross weight."
Full point. (Print.) A punctuation mark, such as a period.
Full size. Drawings made to the actual size of the work they represent.
Full thread. (Mach.) A screw thread which is cut clean and sharply to its proper depth.
Full-wave Rectifier. Rectifying component or circuit in which both postive and negative negative half cycles of a.c. input are used to produce d.c. output.
Fuming, (Wood Fin.) Aging wood by the use of chemicals.
Fuming sulphuric acid. (Chern.) An oily-looking viscous liquid used in refining pertroleum, in the manufacture of explosives, dyes, shoe blacking, etc.
Fundamental. The basic pitch of a musical note. A note consisting only of the fundamental would be a "pure" tone - a sine wave. Most instruments play notes that also contain varying amounts of overtones (Harmonics) in addition to the fundamental; these overtones create the unique character (the timbre) that id~ntifiest the instrument
Fungicide. An agent which tends to destroy fungus. As applied to magnetic tape it denotes an agent added to the coating which prevents or retards fungus growth under specified conditions.
Fungus. (Bot.) Plants, such as mushrooms, molds, mildews, rusts, smuts, etc., living on wood or other organic matter and causing rot. They are produo:;ed by spores, rather than seeds, and are devoid of chlorophyl.
Funnel. (Ellgin.) (I) A hollow
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