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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
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
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 ...
A glossary is a list of specialised or technical words with their meanings. Listed below are many glossaries supporting a wide range of subjects. See also Category:Wikipedia glossaries. Also try our sister project Wiktionary.
The term can be misleading since reality television is almost never wholly improvised and often includes writing of some kind. [citation needed] Seventy-eight (78) rpm records Before the advent of 33 + 1 ⁄ 3 rpm and 45 rpm vinyl records, these were known simply as records, phonograph records or gramophone records. short file name
The template {{}} (a.k.a. {{glossary start}} or {{glossary begin}}) is used with {{glossary end}} to explicitly bracket a glossary or glossary-like description list (also called a definition list or association list), especially in a template-structured glossary, although such lists can be used more generally.
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
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.