Flemish bond to Floodlight

Flemish bond to Flight-path angle

the direction of the motion of the conductor, the middle finger will point in the direction of the induced e.m.f. Left-hand rule: Point the forefinger in the direction of the current in the conductor, then the thumb will point in the direction in which the conductor tends to move. Fleming's rules determine the di­rection in which a motor will ro­
tate, or the polarity of a generated . current from a generator.
Flemish bond. (Masonry) Consists of alternate heades and stretchers in every course, each header centering on the stretchers in the courses above and below. Flemish bond, double. (Mas(Jnry) When both the inner andouter sur­faces of an exposed wall are laid in Flemish bond, all headers being true or full headers, the bond is termed "double Flemish bond."
Flemish garden bond. (Masonry) Consists of three stretchers follawed by a header in each course. The headers in each course center be­tween the stretchers in the course above below.
Fleur-de-lis. The royal insignia of France. It is widely used as a deco­rative unit.
Flexible conduit. (Elec.) Flexible metallic tubing in which electrical. conductors are placed or pulled.
Flexible coupling. A flexible ball coupling consists of two disks at­tached to the shaft ends, hollowed on their faces to encircle a ball placed between them.
Flexible mold. (Plast.) A latex or elastic resin mold for the casting of liquid plastics.
Flexible shaft. (M ech.) A shaft made of jointed links encased in flexible tubing; used to transmit power in places where a straight shaft could not be used.
Flexure formula. (Engin.) The for­mula which treats of the horizon­tal, tensile, and compressive stresses. in beams.Where S equals the unit stress at any e,<treme fiber of the beam due to the bending moment, c is the dis­tance from that fiber to the neutral surface, M, the resisting moment, and I is the moment of inertia of the section.
Flier. (Bldg.) A stair tread that is of uniform width throughout its length.
Fliers. (Print.) Preliminary advertis­ing matter, usually in small attrac­tive form, announcing a coming event.
Flight indicator. (Aero.) An instru­ment in which a lateral inclinom­eter, a fore-and-aft'inclinometer, and a turn indicator are combined to form a compact unit.
Flight of stairs. (Bldg.) The series of steps between floors or land­ings. Two flights of stairs may be broken by a landing. .
Flight path. (Aero.) The path traced by the center of gravity of an air­craft in flight.
Flight-path angle. (Aero;) The an­gle between the flight path of the

Flight recorder to Floodlightaircraft and the horiiontal.
Flight recorder. (Aero.) An instru­ment for recording certain elements of the performance of an aircraft.
Flint. (Mineral.) A subvitreous dull­. colored variety of quartz.
Flip titles. (Tel.) Cards fastened to right binder and allowed to drop in place in front of camera singly or .in sequence.
Flitch beam. A combination beam in which outer timbers enclose a cen­tral beam of iron, bolts passing through the whole to fasten the" members together.
Float. (Aero.) A watertight attachment on an aircraft which permits the latter to float on. water. (Mach.) An
. instrument resembling a file. The cutting action is caused by a series of saw-like serrations. (Plaster.) A piece of board with handle attached used for spreading plaster or stucco on the surface of walls. (Textile.) The long thread.of either the warp or the filling yarn brought to the surface in weaving to form the pattern.
Float carburetor. (Auto.) A carburetor in which a float of cork or hollow metal controls the height of gasoline.
Floating. The equal spreading of plaster, stucco, or cement work by means of a board called a "float."
Floating axle. An axle on which the shaft is relieved of all loads or stresses except turning the wheel.
Floating power. (Auto.) A method of mounting the engine in the chas­sis frame so that its vibration is absorbed by rubber cushions.

Floating tool. (Mach.) A tool so se­cured in its holder that it may be guided in its operation by the piece on which it works.
Float switch. (Elec.) A switch which is opened and closed by a float which rises and falls with the level of the liquid in a tank.
'Float system. (Aero.) The complete system of pennanent floats. used to give buoyancy and stability to a seaplane or a flying boat while it is at rest on the water, and to pro­vide hydrodynamic lift while tak­ing off.
Float trap. (Stream Heat.) A valve actuated by a hollow metal float so arranged that condensation an!i air may pass but steam will be held.
Float valve. (Plumb.) A valve such as used in a toilet tank. A hollow ball floating on the surface shuts off the supply of water at the in­take.
Flock. (Textile.) The soft, fluffy fibers which are thrown off in the proc­esses of woolen and worsted manu­facture.
Flong. (Prin.t.) In stereotyping, a flong is made from several sheets of paper, wetted and pasted to­gether. This flong forms the ma­trix which. after cooling. is a du­plicate of the type page.
Flooding. (Auto.) An excessive amount of rich fuel mixture being fed to the engine resulting in dif­ficult starting.
Floodlight. (Elec.) A lamp or battery of lamp of high power equipped with reflectors to supply brilliant