An abrasive sintered or shaped into a solid cone to be rotated by an arbor for abrasive machining.
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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.
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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.
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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.
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PHOTOEMISSION
The ejection of electrons from a solid (or less commonly, a liquid) by incident electromagnetic radiation. Also known as external photoelectric effect.
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PENCIL
An implement for writing or making marks with a solid substance; the three basic kinds are graphite, carbon, and colored.
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PASTE MIXER
Device for the blending together of solid particles and a liquid, with the final formation of a single paste phase.
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OILLESS BEARING
A self-lubricating bearing containing solid or liquid lubricants in its material.
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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.
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NAVIER'S EQUATION
A vector partial differential equation for the displacement vector of an elastic solid in equilibrium and subjected to a body force.
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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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