F to False horizon

F to Faciliate

F. A Fraunhofer line in the blue of solar spectrum or wavelength 486.1527 nm. It is the second line in the Balmer hydrogen series known also as H~; symbol for Fara­day, farad; symbol used following a temperature (e.g;48°F), to indi­cate the Fahrenheit scale.
Fabricate. (Plast.) Working plastics into products by any or a combina­tion of manufacturing methods. .
Fabrication. (Engin.) The act of build­ing or putting together. Forming into a whole by uniting or assembling of parts; e.g., the fabrication of a ship or a bridge.
Fabric universal joint. (Auto.) Made of heavy fabric. Tl)is type of joint is best adapted to short shafts and close quarters, as accessory shafts about the engine, although it is sometimes used between trans­mision and rear axle.
Facade. (Arch.) The front. elevation or exterior face of a building.
Face. (Mech.) the face of a casting is that surface which is turned or polished. The face of a gear wheel indicates the breadth»fthe teeth; of a belt pulley, the breadth of the rim. (Print.) That part of type which makes the printed impression. (Mech.) To true up the cnd of a piece carried between lathe centers, or to machine the flat surface of a piece carried on an arbor, a face­ plate, or in a chuck. .
Facebrick. (Arch., Masonry) Brick of the better quality, such as is used on walls prominently exposed.
Face hammer. (Masonry) Used for rough dressing stones. It has one blunt end and one cutting end.
Face lathe. (Mach.) A short-bed, deep-gap lathe designed for the ma­chining of large, flat surfaces.
Face mark. (Wood wkg.) A mark placed on one surface of a piece of wood which is being worked, in order that it may be identified as the face from which other surfaces are trued.
Face mold. (Arch. and Bldg.) The full size or scale drawing or dia­gram of the curved portions of a sloping handrail..The drawing gives thetrue dimension and shape of the top of the handrail.
Faceplate or face chuck. A circular plate for attachment to the spindle in the headstock of a lathe. Work may be clamped or bolted to it. The slots engage the tail of the lathe dog.
Facet. One of the flat surfaces cut on gems or precious stones.
Facilitate. To promote easier opera­tion or completion.

Facing to False horizon

Facing. (Fdry.) To produce smooth small castings a facing material such as plumbago or talc is dusted over the mold after the pattern. has been removed. For large castings a mix­ture of sea coal and sand is placed over and around the pattern prior to ramming up the mold. (Textile) J'he covering or visible fabric of a col­lar..
Facsimile. An exact copy or repro­duction.
Factory of safety. The number which results by dividing the ultimate strength of a material by the actual unit stress on a sectional area.
Fade. The process of reducing the signal level until it is largely attenu­ated or completely inaudible (faded away). There are short. fades (al­most imlTl;~diate) and long fades (F~om 5 to 30 seconds). Fades are most often done at the end of a recording. Can ~ used with refer­ence to both audio and video.
Fade in. (Tel.) To bring up the televi­sion image electronically so that it appears gradually.
Fade out. (Tel.) (Reverse process.) To black out a television image elec­tronically so that it disappears gradu­ally.
Fading. (Elec.) In radio reception: the temporary varying of signal strength generally due to atmospheric con­ditions. .
Fagot. (Forg.) A bundle made up of a number of iron bars to be heated, hammered, and welded into a unit for rolling to form another bar.
Fahlum metal. (Metal.) A white alloy used in the manufacture of cheap jewelry. It contains 40 per cent tin and 60 per cent lead.
Fahrenheit. Gabriel Fahrenheit, a German physicist (1686-1736.)
His name is given to the commonly. used thermometer scale in which the freezing point is 32 deg., and the boiling point 212 deg.
Faience. (Pot.) A variety of majolica ware, usually highly decorated.
Failure. The inability of materials and structures to endure or accom­plish the work for which they' were selec~ and designed.
Fairing. (Aero.) An auxiliary mem­ber or structure whose primary function is to reduce head resist­ance or drag of the part to which it is fitted (without, in general, con­tributing strength).
Faldstool. (Furn.) A desk at which the litany is read, as in the Church of England; also a type of folding stool or chair.
Fallacy. Any of various types of er­roneous reasoning that render ar­guments logically unsound.
False horizon. A line or plane that simulates the horizon, used in alti­tude measuring device or the like.