Nosing to applications

Nosing to Numerator

main wheels to support the nose of a plane equipped with a tricycle landing gear.

Nosing. (An~h.) That portion of a stair tread which projects beyond the riser on which it rests. Notati<m. Act, process, or method of representing by a series of marks, signs, figures, or characters; or, the system so used.

Notch. An angular cut, indentation, or hollow in an object, surface, or edge .

Notching. (Furn.) A form of decora­tion formerly used on oak furni­ture.

Notching machine. (Sheer-Met. Wk.) A machine used for notching blanks of pkced sheet-metal ware, for cutting the corners of square pans, etc. The notching is accom­plished. by means of dies.

Novolak. (Chern. Plast.) A perma­nently fusible and soluble phenol­aldehyde resin. More spe.cifically it is the reaction-product of one molecule of phenol with less than one molecule of formaldehyde, and an acid catalyst.

Nozzle. (Mech. Engin.) A contracted vent, usually at the end of a flex­ible tube, as a hose. (Plast.) The injection end of a plastic molding machine.

Nuclear. Of, pertaining to, or form­ing a nucleus; operated or pow­ered by atomic energy.

Nuclear energy. (phys.) The energy released in a nuclear reaction.

Nuclear: physics. The branch of phy­Sics that deals with the behaviour, structure, and component parts of atomic nuclei.

Nuclear turbojet. (Aero.) A turbojet engine having a nuclear reactor rather than a combustion chamber to heat the incoming air for expan­sion through the turbine and out the jet nozzle.

Nucleon. A proton or neutron esp when considered as a component of a nucleus.
Nucleonics. The branch of science that deals with atomic nuclei esp . practical applications.

Nucleus. (Chem.) The inner core of the atom, consisting of tightly locked neutrons and protons.

Nulling. (Carp.) Turned. or carved detail, quadrant shaped in section, . used on frizes and moldings in Jacobean work.

Number drills. (Metalwk.) Small drills numbered from I to 80, with diameters expressed in thousandth of an inch. No. I is 0.228 in. diameter; No. 80 is 0.0135 in. dia­meter.

Numbering machine. A machine or device for stamping consecutive numbers on checks, tickets, etc.

Number 1. (Paperrnkg. and Print.) A prefix used with reference to the best grade of a paper.

Numerals. (Print.) The most com­monly used, or Arabic numerals are 1,2,3,4,5,6, 7, 8, 9, 0; the Roman numerals are I (1), V (5), X (10), L (50), C (100), D (500), M (1000).

Numerator. (I) In writing a fraction that part above the denominator.