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Obsolete name for an ammeter; now an instrument for measuring fluid viscosity. rheostat Obsolete name for a two terminal variable resistor, usually with a rotating shaft to allow manual or motor driven adjustment. right-hand rule A mnemonic device for remembering the definitions of the directions of current and magnetic field in generators. ripple
By 1914, the IEC had issued a first list of terms and definitions covering electrical machinery and apparatus, a list of international letter symbols for quantities and signs for names of units, a list of definitions in connection with hydraulic turbines, and a number of definitions and recommendations relating to rotating machines and ...
An analog signal uses some property of the medium to convey the signal's information. For example, an aneroid barometer uses rotary position as the signal to convey pressure information. In an electrical signal, the voltage , current , or frequency of the signal may be varied to represent the information.
There are notable non-electrical analog devices, such as some clocks (sundials, water clocks), the astrolabe, slide rules, the governor of a steam engine, the planimeter (a simple device that measures the surface area of a closed shape), Kelvin's mechanical tide predictor, acoustic rangefinders, servomechanisms (e.g. the thermostat), a simple mercury thermometer, a weighing scale, and the ...
Analog (program), a computer program that analyzes log files from web servers; Analogical models, a method of representing a phenomenon of the world by another, more understandable or analyzable system; Functional analog (chemistry), a compound with similar properties; Structural analog, a compound with an altered chemical structure
Analogue electronics (American English: analog electronics) are electronic systems with a continuously variable signal, in contrast to digital electronics where signals usually take only two levels. The term analogue describes the proportional relationship between a signal and a voltage or current that represents the signal.
This is an alphabetical list of notable technology terms. It includes terms with notable applications in computing, networking, and other technological fields. Contents
A new definition, in terms of the elementary charge, will take effect on 20 May 2019. [141] The new definition defines the elementary charge (the charge of the proton) as exactly 1.602 176 634 × 10 −19 coulombs. This would implicitly define the coulomb as 1 ⁄ 0.160 217 6634 × 10 18 elementary charges. Coulomb's law