The siemens (symbol: S ) is the unit of electric conductance , electric susceptance , and electric admittance in the International System of Units (SI). Conductance, susceptance, and admittance are the reciprocals of resistance , reactance , and impedance respectively; hence one siemens is equal to the reciprocal of one ohm ( Ω ) and is also referred to as the mho . The siemens was adopted by the IEC in 1935, and the 14th General Conference on Weights and Measures approved the addition of the siemens as a derived unit in 1971.
13-550: [REDACTED] Look up ES or Es in Wiktionary, the free dictionary. Es , ES , or similar may refer to: Arts and entertainment [ edit ] An alternate name for the musical note E♭ (E-flat) E's , a manga series by Satoru Yuiga Es (film) , the German title of It , a 1966 West German film directed by Ulrich Schamoni ES (Eternal Sabbath) ,
26-765: A command-line interpreter Expert system , to automate decision making Other computing uses [ edit ] .es , the top-level Internet domain for Spain ES EVM , a Soviet series of IBM computer clones ES register , in x86 computer architecture ECMAScript , popularly known as JavaScript Elasticsearch , a search engine Elementary stream , part of the MPEG communication protocol Units of measure [ edit ] Exasecond (Es), an SI unit of time (greater than all elapsed time) Exasiemens (ES), an SI unit of electric conductance Other uses in science and technology [ edit ] Edison screw ,
39-717: A manga by Fuyumi Soryo ES , a supplement of the Evening Standard newspaper Es , a fictional character from the BlazBlue series Businesses, organizations, and products [ edit ] Gibson ES Series , a line of guitars Lexus ES , a series of automobiles E-mini S&P , a futures contract on the Chicago Mercantile Exchange (symbol ES) Eurostar (National Rail abbreviation ES) DHL International Aviation ME (IATA airline code ES) Language [ edit ] Es,
52-508: A measure of risk See also [ edit ] ES engine (disambiguation) Topics referred to by the same term [REDACTED] This disambiguation page lists articles associated with the title ES . If an internal link led you here, you may wish to change the link to point directly to the intended article. Retrieved from " https://en.wikipedia.org/w/index.php?title=ES&oldid=1239879963 " Category : Disambiguation pages Hidden categories: Short description
65-572: A phonetic spelling of the Latin alphabet letter S -es , a word ending Spanish language (ISO 639 alpha-2 language code) Es (cyrillic) , a letter in the Cyrillic alphabet that looks like the Latin letter C Places [ edit ] Spain (ISO 3166-1 country code) El Salvador (FIPS 10-4 country code) Espírito Santo , a state in Brazil (ISO 3166-2:BR code) Eš , a village in
78-565: A type of lightbulb socket (e.g. ES14, ES27) Embryonic stem cell , in biology, from a fertilised ovum Electronic support , in military telecommunications Other uses [ edit ] Es , the German term for the id , one of the psychic apparatus defined in Sigmund Freud's structural model of the psyche Série économique et sociale , a specialization within the French academic "baccalauréat" degree Expected shortfall ,
91-635: Is an inverted capital Greek letter omega : U+2127 ℧ INVERTED OHM SIGN . NIST 's Guide for the Use of the International System of Units (SI) refers to the mho as an "unaccepted special name for an SI unit", and indicates that it should be strictly avoided. The SI term siemens is used universally in science and often in electrical applications, while mho is still used in some electronic contexts. The inverted capital omega symbol (℧), while not an official SI abbreviation,
104-455: Is different from Wikidata All article disambiguation pages All disambiguation pages ES">ES The requested page title contains unsupported characters : ">". Return to Main Page . Exasiemens The unit is named after Ernst Werner von Siemens . In English, the same word siemens is used both for the singular and plural. Like other SI units named after people,
117-499: Is less likely to be confused with a variable than the letter "S" when writing the symbol by hand. The usual typographical distinctions (such as italic for variables and roman for units) are difficult to maintain. Likewise, it is difficult to distinguish the symbol "S" ( siemens ) from the lower-case "s" ( seconds ), potentially causing confusion. So, for example, a pentode ’s transconductance of 2.2 mS might alternatively be written as 2.2 m℧ or 2200 μ℧ (most common in
130-576: The Czech Republic ES, an abbreviation for " elementary school ", as seen on some maps, etc. ( e.g. , Matsukage ES, Yawatahama, Japan) CIA cryptonym for Guatemala Science and technology [ edit ] Chemical element Es [ edit ] Einsteinium , first made in 1952 (atomic number: 99) Hesperium (or Esperium), misidentified as an element in 1934 Computer software [ edit ] Es (operating system) , developed by Nintendo, then Google es (Unix shell) ,
143-401: The device. The conductance of a resistor with a resistance of five ohms, for example, is (5 Ω) , which is equal to a conductance of 200 mS. A historical equivalent for the siemens is the mho ( / ˈ m oʊ / ). The name is derived from the word ohm spelled backwards as the reciprocal of one ohm, at the suggestion of Sir William Thomson (Lord Kelvin) in 1883. Its symbol
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#1732750471365156-411: The object and V is the voltage (electrical potential difference) across the object. The unit siemens for the conductance G is defined by where Ω is the ohm , A is the ampere , and V is the volt . For a device with a conductance of one siemens, the electric current through the device will increase by one ampere for every increase of one volt of electric potential difference across
169-408: The symbol (S) is capitalized but the name of the unit is not. For the siemens this distinguishes it from the second , symbol (lower case) s. The related property, electrical conductivity , is measured in units of siemens per metre (S/m). For an element conducting direct current , electrical resistance R and electrical conductance G are defined as where I is the electric current through
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