Interference to Iodine

to Interpolation

Interference. (Aero.) The aero­dynamic influence of two or more bodies on one another. (Radio.) Any electrical or magnetic disturbance which will change or modulate the received signal. (Tel.) Spurious electrical signals which cause noise in the sound reproduced by a receiver and which disrupt or tear the receiver picture.
Intergrain. (Bookhndg.)A trade name for buckram book cloth, correspond­ing to Caxton buckram, often with an embossed crepe grain.
Interior finish. (Bldg.) (1) The gen­eral effect of the inside finishing of a building. (2) The kind of material and the manner in which it is fin­ished as trim and general decora­tions. .
Interlacing. (Tel.) The picture -scan­ning systemin television whereby the odd-numbered lines are sent as a separate field and the even-num­bered lines are then filled in or super­ , imposed to create one frame or complete picture.
Interlaken. (Bookbndg.) Trade name for a varied line of book cloth; the second oldest book cloth manufac­tured in America.
Inter-locking. (Mech.) Fastening to­ gether as by a dovetail joint.
Intermediate frequency. (Radio.) The best frequency obtained from the mixer or first detector in a superhete­rodyne receiver.
intermediate gear. An idler; a gear, loose on its stud, for transmitting power between two active gears.
Intermittent gear. (Shopwk.) Gear where the teeth are not continuous, but have plain surfaces between. On the driven gear, these plain sur­faces are concave to fit the plain surface of the driver, and the driven wheel is stationary while the plain surfaces are in contact.
Internal circuit. (Elec.) That part of an electrical circuit included between external terminals. The resistance of the internal circuit causes losses which reduce the effecitve output of the battery or generator.
Internal combustion. (Mach.) Re­fers to any engine which develops power through the expansive force of a fuel which is fired or dis­charged within a closed chamber or cylinder.
Internal forces. (phys.) Forces within a body due to the motion of its molecules.
Internal gear. Where spur wheels or pinions engage with teeth set on the internal circumference of a ring, the gear is called "internaL" The reverse of spur gear.
Internal gear drive. (Auto.) Any drive in which an internal (imnu­lar) gear meshes with a spur pin­ion in order to increase or decrease speed ratio, e.g., rear-axle drive and transmission overdrive.
Internal grinder. (Mach.) A grind­ing machine designed for the ac­curate grinding to size of cylin­ders, holes, and the better grade of internal work.
Internal thread. (Mach.) A thread cut inside a piece of material as, for example, in a nut.
Interpolation. (Math.) The act ofInterpole to Iodine computing intermediate values of a quantity between a series of given values.
Interpole. (Elec.) A small field pole placed between the main field poles and electrically connected in series with the armature.
Interrupted arch. (Furn.) An arch­shaped pediment, the central part of which is cut away.
Interrupter. (Elec.) A device which opens and closes a circuit at very frequent intervals.
Intersect. To pass across, cut through or into, so as to divide.
Intersection. (Geom.) The line of join­ing of two bodies which intersect. Interstice. A small crack or crevice.
Inter-type. (Print.) A line type-cast­ing composing machine similar to the linotype.
Interval. (Shopwk.) Space of time between similar mechanical opera­tions.
Intrados or soffit. The interior curve or under-surface of an arch.
Introduce. To bring into notice, use, or practice. To insert, as in writing, by way of change. To bring into existerice; to produce.
Invarstrut. (Auto.) A steel strut cast in aluminium pistons to equalize the expansion between skirt and head of pistons.
Invention. An idea, method, or device embodying some new and original scheme.
Inventory. The itemized list of goods or stock on hand in a business; also such goods or stock.
Inverse. Opposite in order.
Invert. (Plumb.) The lowest portion of the inside of any pipe or conduit which is not vertical.
Inverted arch. (Masonry) Arch in which the keystone is at its lowest point.
Inverted engine. (Aero.) An engine with cylind~rs below the crank­shaft.
Inverted normal loop. (Aero.) An outside loop starting from invef!ed flight and passing successively through a climb, normal flight, dive, and back to inverted flight.
Inverted spin. (Aero.) A maneuver having the characteristics of a nor­mal spin except that the airplane is in an inverted attitude.
Invoice. Itemized list of purchases and charges, sent to a buyer.
Involute. If a piece of string wound about a cylinder at a certain point should be unwound and kept taut during the unwinding, the end of the string would describe the curve known as an involute.
Involute gear. (Mech.) Gear, the teeth of wh~ch are de"eloped after the involute system as distinguished from those of the cycloidal.
Involute teeth. Most commonly used form of gear teeth, development being based on involute curve.
Involution. (Math.) The multiplica­tion of a quantity by itself any number of times; the raising of a quantity to any power.
Iodide. (Chem.)A salt or compound in which iodine is the acid radical; a salt of hydriodic acid, as potas­sium iodide.
Iodine. (Chem.) Made from Chilean nitrate of soda and from the ashes