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The phase velocity difference between two phases.
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Related Terms |
PHASE-SHIFTING TRANSFORMER
A transformer which produces a difference in phase angle between two circuits.
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PHASE MARGIN
The difference between 180 and the phase of the loop ratio of a stable system at the gain-crossover frequency.
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PHASE-BALANCE RELAY
Relay which functions by reason of a difference between two quantities associated with different phases of a polyphase circuit.
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ORTHOMETRIC CORRECTION
A systematic correction that must be applied to a measured difference in elevation since level surfaces at varying elevations are not absolutely parallel.
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OCEAN THERMAL-ENERGY CONVERSION
The conversion of energy arising from the temperature difference between warm surface water of oceans and cold deep-ocean current into electrical energy or other useful forms of energy. Abbreviated OTEC.
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NOMINAL BANDWIDTH
The difference between the nominal upper and lower cutoff frequencies of an acoustic or electric filter.
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NEWTON'S LAW OF COOLING
The law that the rate of heat flow out of an object by both natural convection and radiation is proportional to the temperature difference between the object and its environment, and to the surface area of the object.
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MOLDING SHRINKAGE
Difference in dimensions between the molding and the mold cavity, measured at normal room temperature.
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MOISTURE GRADIENT
The difference in exit gases and that of moisture at ambient air temperature.
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MODEL REFERENCE SYSTEM
An ideal system whose response is agreed to be optimum; computer simulation in which both the model system and the actual system are subjected to the same stimulus is carried out, and parameters of the actual system are adjusted to minimize the difference in the outputs of the model and the actual system.
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