32-603: [REDACTED] Look up Tc , .tc , or TC in Wiktionary, the free dictionary. TC , T.C. , Tc , T c , tc , tC , or .tc may refer to: Arts and entertainment [ edit ] Film and television [ edit ] Theodore "T.C." Calvin, a character on the TV series Magnum, P.I. and its reboot Tom Caron , American television host for New England Sports Network Top Cat , an animated sitcom named after
64-595: A Mazda piston engine Chrysler TC by Maserati , an automobile sold by Chrysler from 1989 to 1991 Scion tC , a touring coupe produced by Scion based on the Toyota Avensis Traction control system , an anti-slip automobile subsystem Turn coordinator , an aircraft instrument Transit center , a major transport hub for trains and buses Other uses in science and technology [ edit ] Technical committee, see All pages with titles containing Technical committee Teleconverter ,
96-462: A U.S. Article I federal trial court Topics referred to by the same term [REDACTED] This disambiguation page lists articles associated with the title TC . 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=TC&oldid=1244586746 " Category : Disambiguation pages Hidden categories: Short description
128-531: A chemical element Temperature coefficient Critical temperature (T c ) Convective temperature (T c ) Curie temperature (T c ) Teracoulomb , an SI unit for electric charge equal to 10 coulombs Tesla coil , a category of high-voltage discharge coils Tonnes of Carbon (tC) Computing [ edit ] Turing complete .tc , the Internet country code top-level domain (ccTLD) for Turks and Caicos Islands TC (complexity) ,
160-574: A complexity class Tc (Linux) , a command-line utility used to configure network traffic control in the Linux kernel Take Command (command line interpreter) , a command line interpreter by JP Software Telecine (copying) , a form of digital transfer using a Telecine machine Teleconference TrueCrypt , a disk encryption software Trusted Computing , a scheme for adding additional controls on what computers may or may not do into hardware or software Transportation [ edit ] TC ,
192-472: A diversified mining company Transport Canada , a Canadian federal government department Trinity College (Connecticut) , an American liberal arts college Tomball College, now Lone Star College-Tomball Transport Canberra , Australian transport agency People [ edit ] TC Clements , Michigan state representative Tony Currie (footballer) (born 1950), English footballer Places [ edit ] The Republic of Turkey , from
224-493: A kind of secondary photographic lens Timecode , in video and audio production Tropical cyclone , also known as a hurricane, tropical storm, tropical depression, or typhoon Turbocharger , turbine-driven device that increases an internal combustion engine's power output Sports [ edit ] T.C. Bear , mascot for the Minnesota Twins baseball team TC 2000 , a series of races for touring cars which
256-543: A material lowers with increasing temperature, typically in a defined temperature range. For most materials, electrical resistivity will decrease with increasing temperature. Materials with a negative temperature coefficient have been used in floor heating since 1971. The negative temperature coefficient avoids excessive local heating beneath carpets, bean bag chairs, mattresses , etc., which can damage wooden floors , and may infrequently cause fires. Residual magnetic flux density or B r changes with temperature and it
288-415: A phenomenon known as doppler broadening , where resonance absorption of fast neutrons in fuel filler material prevents those neutrons from thermalizing (slowing down). In its more general form, the temperature coefficient differential law is: Where is defined: And α {\displaystyle \alpha } is independent of T {\displaystyle T} . Integrating
320-401: A relatively rapid decrease with temperature, i.e. a lower coefficient. The lower the coefficient, the greater a decrease in electrical resistance for a given temperature increase. NTC materials are used to create inrush current limiters (because they present higher initial resistance until the current limiter reaches quiescent temperature), temperature sensors and thermistors . An increase in
352-408: Is broadly cited as important for reactor safety, but wide temperature variations across real reactors (as opposed to a theoretical homogeneous reactor) limit the usability of a single metric as a marker of reactor safety. In water moderated nuclear reactors, the bulk of reactivity changes with respect to temperature are brought about by changes in the temperature of the water. However each element of
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#1732772846052384-475: Is different from Wikidata All article disambiguation pages All disambiguation pages Tc">Tc The requested page title contains unsupported characters : ">". Return to Main Page . Temperature coefficient A temperature coefficient describes the relative change of a physical property that is associated with a given change in temperature . For a property R that changes when
416-967: Is held each year in Argentina TC Panther, the mascot of the Northern Iowa Panthers Total chances , a baseball fielding term Turismo Carretera , a popular stock car category in Argentina Other uses [ edit ] Total Communication , a form of sign language Total cost , in economics and accounting Traffic collision , an automobile accident Trinity Cross , the highest national award in Trinidad and Tobago Type certificate , an aircraft document Traditional Chinese characters , Chinese characters in any character set that does not contain newly created characters or character substitutions performed after 1946 United States Tax Court ,
448-612: Is one of the important characteristics of magnet performance. Some applications, such as inertial gyroscopes and traveling-wave tubes (TWTs), need to have constant field over a wide temperature range. The reversible temperature coefficient (RTC) of B r is defined as: To address these requirements, temperature compensated magnets were developed in the late 1970s. For conventional SmCo magnets , B r decreases as temperature increases. Conversely, for GdCo magnets, B r increases as temperature increases within certain temperature ranges. By combining samarium and gadolinium in
480-552: Is raised. Materials which have useful engineering applications usually show a relatively rapid increase with temperature, i.e. a higher coefficient. The higher the coefficient, the greater an increase in electrical resistance for a given temperature increase. A PTC material can be designed to reach a maximum temperature for a given input voltage, since at some point any further increase in temperature would be met with greater electrical resistance. Unlike linear resistance heating or NTC materials, PTC materials are inherently self-limiting. On
512-422: Is resistance at temperature T 0 {\displaystyle T_{0}} . Therefore, many materials that produce acceptable values of R 0 {\displaystyle R_{0}} include materials that have been alloyed or possess variable negative temperature coefficient (NTC), which occurs when a physical property (such as thermal conductivity or electrical resistivity ) of
544-416: Is the value of the partial differential of reactivity with respect to temperature and is referred to as the "temperature coefficient of reactivity". As a result, the temperature feedback provided by α T {\displaystyle \alpha _{T}} has an intuitive application to passive nuclear safety . A negative α T {\displaystyle \alpha _{T}}
576-640: The Xenosaga game series Organizations [ edit ] TC Electronic , a Danish manufacturer of studio equipment and guitar effects Air Tanzania (IATA code TC) Teachers College, Columbia University , a graduate school of education in New York City Telecom Cambodia , a telecom company in Cambodia Tierra Comunera , a Spanish political party Thompson Creek Metals Company Inc (NYSE: TC),
608-505: The Turkish name, Türkiye Cumhuriyeti Traverse City, Michigan , US Turks and Caicos Islands (ISO 3166-1 country code TC) Science and technology [ edit ] Biology and medicine [ edit ] Testicular cancer Therapeutic community , a treatment program for addictions, personality disorder or other mental problems Cytotoxic T-cells Chemistry and physics [ edit ] Technetium , symbol Tc,
640-474: The alloy, the temperature coefficient can be reduced to nearly zero. The temperature dependence of electrical resistance and thus of electronic devices ( wires , resistors) has to be taken into account when constructing devices and circuits . The temperature dependence of conductors is to a great degree linear and can be described by the approximation below. where ρ 0 {\displaystyle \rho _{0}} just corresponds to
672-419: The core has a specific temperature coefficient of reactivity (e.g. the fuel or cladding). The mechanisms which drive fuel temperature coefficients of reactivity are different from water temperature coefficients. While water expands as temperature increases , causing longer neutron travel times during moderation , fuel material will not expand appreciably. Changes in reactivity in fuel due to temperature stem from
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#1732772846052704-405: The function and the value of resistivity at a given temperature. For both, α {\displaystyle \alpha } is referred to as the temperature coefficient of resistance (TCR). This property is used in devices such as thermistors. A positive temperature coefficient (PTC) refers to materials that experience an increase in electrical resistance when their temperature
736-445: The other hand, NTC material may also be inherently self-limiting if constant current power source is used. Some materials even have exponentially increasing temperature coefficient. Example of such a material is PTC rubber . A negative temperature coefficient (NTC) refers to materials that experience a decrease in electrical resistance when their temperature is raised. Materials which have useful engineering applications usually show
768-503: The protagonist TC Televisión , Ecuador, a TV network Music [ edit ] TC Smith , American singer, for TCR Tom Constanten (born 1944), American musician from the Grateful Dead Top Combine , a Mandopop boy band TC (musician) , a British drum and bass producer and DJ Games [ edit ] Transcendental Chess X3: Terran Conflict , a PC game T.C., an era designation in
800-455: The reactions lies between 2 and 3. Most ceramics exhibit negative temperature dependence of resistance behaviour. This effect is governed by an Arrhenius equation over a wide range of temperatures: where R is resistance, A and B are constants, and T is absolute temperature (K). The constant B is related to the energies required to form and move the charge carriers responsible for electrical conduction – hence, as
832-407: The specific resistance temperature coefficient at a specified reference value (normally T = 0 °C) That of a semiconductor is however exponential: where S {\displaystyle S} is defined as the cross sectional area and α {\displaystyle \alpha } and B {\displaystyle B} are coefficients determining the shape of
864-443: The temperature changes by dT , the temperature coefficient α is defined by the following equation: Here α has the dimension of an inverse temperature and can be expressed e.g. in 1/K or K . If the temperature coefficient itself does not vary too much with temperature and α Δ T ≪ 1 {\displaystyle \alpha \Delta T\ll 1} , a linear approximation will be useful in estimating
896-488: The temperature coefficient differential law: Applying the Taylor series approximation at the first order, in the proximity of T 0 {\displaystyle T_{0}} , leads to: The thermal coefficient of electrical circuit parts is sometimes specified as ppm /° C , or ppm / K . This specifies the fraction (expressed in parts per million) that its electrical characteristics will deviate when taken to
928-435: The temperature coefficient of reactivity is a measure of the change in reactivity (resulting in a change in power), brought about by a change in temperature of the reactor components or the reactor coolant. This may be defined as Where ρ {\displaystyle \rho } is reactivity and T is temperature. The relationship shows that α T {\displaystyle \alpha _{T}}
960-560: The temperature of a semiconducting material results in an increase in charge-carrier concentration. This results in a higher number of charge carriers available for recombination, increasing the conductivity of the semiconductor. The increasing conductivity causes the resistivity of the semiconductor material to decrease with the rise in temperature, resulting in a negative temperature coefficient of resistance. The elastic modulus of elastic materials varies with temperature, typically decreasing with higher temperature. In nuclear engineering ,
992-467: The value R of a property at a temperature T , given its value R 0 at a reference temperature T 0 : where Δ T is the difference between T and T 0 . For strongly temperature-dependent α, this approximation is only useful for small temperature differences Δ T . Temperature coefficients are specified for various applications, including electric and magnetic properties of materials as well as reactivity. The temperature coefficient of most of
TC - Misplaced Pages Continue
1024-400: The value of B increases, the material becomes insulating. Practical and commercial NTC resistors aim to combine modest resistance with a value of B that provides good sensitivity to temperature. Such is the importance of the B constant value, that it is possible to characterize NTC thermistors using the B parameter equation: where R 0 {\displaystyle R_{0}}
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