A solid plug driven into the end of a tube.


Related Terms

PLUGGING

1. Braking an electric motor by reversing its connections, so it tends to turn in the opposite direction; the circuit is opened automatically when the motor stops, so the motor does not actually reverse. 2. The formation of a barrier (plug) of solid material in a process flow system, such as a pipe or reactor.

PLASTIC DEFORMATION

Permanent change in shape or size of a solid body without fracture resulting from the application of sustained stress beyond the elastic limit.

PINT

Abbreviated pt. 1. A unit of volume, used in the United States for measurement of liquid substances, equal to 1/8 U.S. gallon, or 231/8 cubic inches, or 4.73176473 10 4 cubic meter. Also known as liquid pint (liq pt). 2. A unit of volume used in the United States for measurement of solid substances, equal to 1/64 U.S. bushel, or 107,521/3200 cubic inches, or approximately 5.50610 10 4 cubic meter. Also known as dry pint (dry pt). 3. A unit of volume, used in the United Kingdom for measurement of liquid and solid substances, although usually the former, equal to 1/8 imperial gallon, or 5.6826125 10 4 cubic meter. Also known as imperial pint.

PHOTOEMISSION

The ejection of electrons from a solid (or less commonly, a liquid) by incident electromagnetic radiation. Also known as external photoelectric effect.

PENCIL

An implement for writing or making marks with a solid substance; the three basic kinds are graphite, carbon, and colored.

PASTE MIXER

Device for the blending together of solid particles and a liquid, with the final formation of a single paste phase.

OILLESS BEARING

A self-lubricating bearing containing solid or liquid lubricants in its material.

NEUMANN-KOPP RULE

The rule that the heat capacity of 1 mole of a solid substance is approximately equal to the sum over the elements forming the substance of the heat capacity of a gram atom of the element times the number of atoms of the element in a molecule of the substance.

NAVIER'S EQUATION

A vector partial differential equation for the displacement vector of an elastic solid in equilibrium and subjected to a body force.

MOLE DRAIN

A subsurface channel for water drainage; formed by pulling a solid object, usually a solid cylinder having a wedge-shaped point at one end, through the soil at the proper slope and depth.

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