TOWER

A tall, slender structure, which may be charted with a position circle.

tower position

Related Terms

PLUMB

Pertaining to an object or structure in true vertical position as determined by a plumb bob.

plumb vertical plumb structure position

PISTON GAGE SEE FREE-PISTON GAGE. PISTON METER

A variable-area, constanthead fluid-flow meter in which the position of the piston, moved by the buoyant force of the liquid, indicates the flow rate. Also known as piston-type area meter.

piston_gage_see_free-piston_gage_piston_meter meter flow force area position

PIPE SLEEVE

A hollow, cylindrical insert placed in a form for a concrete wall at the position where a pipe is to penetrate in order to prevent flow of concrete into the opening.

pipe_sleeve pipe form cylindrical flow wall position

[CONTSYS] Aphotoelectric control system used as a position regulator for a loop of material passing from one stripprocessing line to another that may travel at a different speed. Also known as loop control.

photoelectricloopcontrol regulator loop line control_system system may material control position

PHASE PORTRAIT

A graph showing the time derivative of a system's position (or some other quantity characterizing the system) as a function of position for various values of initial conditions.

phase_portrait time position

PHASE PLANE ANALYSIS

A method of analyzing systems in which one plots the time derivative of the system's position (or some other quantity characterizing the system) as a function of position for various values of initial conditions.

phase_plane_analysis time position

OPTIMAL SMOOTHER

An optimal filer 383 orbital angular momentum orbital moment of the position vector with the linear momentum. Also known as orbital momentum.

optimal_smoother orbital_angular_momentum moment momentum vector linear angular_momentum angular position

OBLITERATED CORNER

In surveying, a corner for which visible evidence of the previous surveyor's work has disappeared, but whose original position can be established from other physical evidence and testimony.

obliterated_corner can work position

NULL-BALANCE RECORDER

An instrument in which a motor-driven slide wire in a measuring circuit is continuously adjusted so that the voltage or current to be measured will be balanced against the voltage or current from this circuit; a pen linked to the slide wire makes a graphical record of its position as a function of time.

null-balance_recorder current pen circuit instrument wire position voltage

NONQUANTUM MECHANICS

The classical mechanics of Newton and Einstein as opposed to the quantum mechanics of Heisenberg, Schro dinger, and Dirac; particles have definite position and velocity, and they move according to Newton's laws.

nonquantum_mechanics newton particles position