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Overheating (engine)
Overheating may refer to: * Overheating (economics), a rapid, very big growth of production that is thought to have a negative influence * Overheating (electricity), unexpected rise of temperature in a portion of electrical circuit, that can cause harm to the circuit, and accidents * Overheating (combinatorial game theory), an operation on combinatorial games that approximately reverses the effect of chilling * Hyperthermia, also called sunstroke, an elevated body temperature due to failed thermoregulation * Thermal shock, the overheating of a device leading to reduced efficiency, damage or even destruction See also * "Overheated", a song by Billie Eilish from the studio album ''Happier Than Ever ''Happier Than Ever'' is the second studio album by American singer Billie Eilish, released by Darkroom and Interscope Records on July 30, 2021. Eilish co-wrote the album with her brother and frequent collaborator Finneas O'Connell, who also p ...
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Overheating (economics)
Overheating of an economy occurs when its productive capacity is unable to keep pace with growing aggregate demand. It is generally characterised by a below-average rate of economic growth, where growth is occurring at an unsustainable rate. Boom periods are often characterised by overheating in the economy. An economy is said to be overheated when inflation increases due to prolonged good growth rate and the producers produce in excess thereby creating excess production capacity. The main reason behind overheating is insufficient supply allocation because of excess spending by the people due to increase in consumer wealth. Causes High levels of aggregate demand tend to be the cause of overheating. If short run aggregate demand exceeds long run aggregate supply, then the excess demand for goods must be met via the over-employment of resources. This may be achieved by employing workers for extra shifts or using machinery beyond their recommended working hours. This type of produc ...
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Overheating (electricity)
Overheating is a phenomenon of rising temperatures in an electrical circuit. Overheating causes damage to the circuit components and can cause fire, explosion, and injury. Damage caused by overheating is usually irreversible; the only way to repair it is to replace some components. Causes When overheating, the temperature of the part rises above the operating temperature. Overheating can take place: *if heat is produced in more than expected amount (such as in cases of short-circuits, or applying more voltage than rated), or *if heat dissipation is poor, so that normally produced waste heat does not drain away properly. Overheating may be caused from any accidental fault of the circuit (such as short-circuit or spark-gap), or may be caused from a wrong design or manufacture (such as the lack of a proper heat dissipation system). Due to accumulation of heat, the system reaches an equilibrium of heat accumulation vs. dissipation at a much higher temperature than expected. Preventiv ...
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Overheating (combinatorial Game Theory)
In combinatorial game theory, cooling, heating, and overheating are operations on hot games to make them more amenable to the traditional methods of the theory, which was originally devised for cold games in which the winner is the last player to have a legal move. Overheating was generalised by Elwyn Berlekamp for the analysis of Blockbusting. Chilling (or unheating) and warming are variants used in the analysis of the endgame of Go. Cooling and chilling may be thought of as a tax on the player who moves, making them pay for the privilege of doing so, while heating, warming and overheating are operations that more or less reverse cooling and chilling. Basic operations: cooling, heating The cooled game G_t (" G cooled by t ") for a game G and a (surreal) number t is defined by :: G_t = \begin \ & \text t \leq \text \tau \text G_\tau \text m \text\\ G_t = m & \text t > \tau \end . The amount t by which G is cooled is known as the ''temperature''; the minimum ...
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Hyperthermia
Hyperthermia, also known simply as overheating, is a condition in which an individual's body temperature is elevated beyond normal due to failed thermoregulation. The person's body produces or absorbs more heat than it dissipates. When extreme temperature elevation occurs, it becomes a medical emergency requiring immediate treatment to prevent disability or death. Almost half a million deaths are recorded every year from hyperthermia. The most common causes include heat stroke and adverse reactions to drugs. Heat stroke is an body temperature, acute temperature elevation caused by exposure to excessive heat, or combination of heat and humidity, that overwhelms the heat-regulating mechanisms of the body. The latter is a relatively rare side effect of many drugs, particularly those that affect the central nervous system. Malignant hyperthermia is a rare complication of some types of general anesthesia. Hyperthermia can also be caused by a traumatic brain injury. Hyperthermia di ...
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Thermal Shock
Thermal shock is a type of rapidly transient mechanical load. By definition, it is a mechanical load caused by a rapid change of temperature of a certain point. It can be also extended to the case of a thermal gradient, which makes different parts of an object expand by different amounts. This differential expansion can be more directly understood in terms of strain, than in terms of stress, as it is shown in the following. At some point, this stress can exceed the tensile strength of the material, causing a crack to form. If nothing stops this crack from propagating through the material, it will cause the object's structure to fail. Failure due to thermal shock can be prevented by: # Reducing the thermal gradient seen by the object, by changing its temperature more slowly or increasing the material's thermal conductivity # Reducing the material's coefficient of thermal expansion # Increasing its strength # Introducing built-in compressive stress, as for example in tempered ...
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