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[...]... abcoulomb produces a potential of 1 abvolt abhenry The unit of inductance in the cgs electromagnetic system One abhenry equals 10–9 henry Copyright 2001 The McGraw-Hill Companies, Inc Click Here for Terms of Use 5059F-pA_1-55 2 4/9/01 4:41 PM Page 2 abhenry • absolute error and is the inductance across which a current that changes at the rate of 1 abampere per second induces a potential of 1 abvolt... required to restore balance, the upper-disk area, and the disk separation absolute minimum resistance The resistance between the wiper and the nearer terminal of a potentiometer, when the wiper is as close to that terminal as physically possible All potentiometers have two such specifications, one for each end terminal 3 absolute Peltier coefficient The product of the absolute Seebeck coefficient and absolute... Comparison of two sounds by reproducing them in alternating succession 5059F-pA_1-55 4/9/01 4:41 PM Page 5 abvolt • accentuation abvolt The unit of potential difference in the cgs electromagnetic system One abvolt equals 10–8 V and is the difference of potential between any two points when 1 erg of work is required to move 1 abcoulomb of electricity between them abwatt The unit of power in the cgs... are bases (alkalis) The group includes cesium, francium, lithium, potassium, rubidium, and sodium alkaline battery 1 A battery composed of alkaline cells and characterized by a relatively flat discharge curve under load alkaline cell A common non-rechargeable electrochemical cell that employs granular zinc for the negative electrode, potassium hydroxide as the electrolyte, and a device called a polarizer... abnormal triggering abohm The unit of resistance and of resistivity in the cgs electromagnetic system One abohm equals 10–9 ohms and is the resistance across which a steady current of 1 abampere produces a potential difference of 1 abvolt abort To deliberately terminate an operation, experiment, process, or project before it has run its normal course AB power pack 1 A portable dry-cell or wet-cell array... ungrounded contact in a dial telephone system absiemens The unit of conductance or conductivity in the cgs electromagnetic system One absiemens equals 109 siemens and is the conductance through which a potential of 1 abvolt forces a current of 1 abampere absolute 1 A temperature scale in which zero represents the complete absence of heat Units of measure are same as units on Celsius and Fahrenheit scales... torque and the moment of inertia of the motor’s rotor acceleration derivative Acceleration (a) expressed as the second derivative of distance (s) with respect to time (t): a equals d 2s/dt 2 acceleration potential See ACCELERATING VOLTAGE acceleration switch A switch that operates automatically when the acceleration of a body to which it is attached exceeds a predetermined rate in a given direction acceleration... instructions Compare ACCESS TIME acceleration torque During the accelerating period of a motor, the difference between the torque demanded and the torque actually produced by the motor acceleration voltage The potential between accelerating elements in a vacuum tube, the value of which determines average electron velocity accelerometer A transducer whose output voltage is proportional to the acceleration of... telemetered data acquisition and tracking radar An airborne or ground radar, which locks in on a strong signal and tracks the body that reflects (or transmits) the signal acquisition radar A radar that spots an oncoming target and supplies position data regarding the target to a fire-control or missile-guidance radar, which then tracks the target acr 1 Abbreviation of AUDIO CASSETTE RECORDER 2 Abbreviation... whose sensitivity, range, or response can be varied at will (e.g., multirange meter or wideband generator) 2 An instrument that requires adjustment or manipulation to measure a quantity (e.g., bridge, potentiometer, or attenuator) adjustable motor tuning An arrangement that allows the motor tuning of a receiver to be confined to a portion of the frequency spectrum adjustable resistor A wirewound resistor . audio-frequency spectrum. abvolt The unit of potential difference in the cgs electromagnetic system. One abvolt equals 10 –8 V and is the difference of potential between any two points when 1 erg. inductance across which a current that changes at the rate of 1 abampere per second induces a potential of 1 abvolt. ABL Abbreviation of Automated Biology Laboratory (NASA). abmho The obsolete. abohm equals 10 –9 ohms and is the resistance across which a steady current of 1 abampere produces a potential difference of 1 abvolt. abort To deliberately terminate an operation, experiment, process,