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| ==Etymology== | | ==Etymology== |
| [https://nordan.daynal.org/wiki/index.php?title=English#ca._1100-1500_.09THE_MIDDLE_ENGLISH_PERIOD Middle English] stem, from [https://nordan.daynal.org/wiki/index.php?title=English#ca._600-1100.09THE_OLD_ENGLISH.2C_OR_ANGLO-SAXON_PERIOD Old English] stēam; akin to Dutch stoom steam | | [https://nordan.daynal.org/wiki/index.php?title=English#ca._1100-1500_.09THE_MIDDLE_ENGLISH_PERIOD Middle English] stem, from [https://nordan.daynal.org/wiki/index.php?title=English#ca._600-1100.09THE_OLD_ENGLISH.2C_OR_ANGLO-SAXON_PERIOD Old English] stēam; akin to Dutch stoom steam |
− | *Date: before [http://www.wikipedia.org/wiki/12th_Century 12th century] | + | *Date: before [https://www.wikipedia.org/wiki/12th_Century 12th century] |
| ==Definitions== | | ==Definitions== |
| *1 : a [[vapor]] arising from a [[heat]]ed substance | | *1 : a [[vapor]] arising from a [[heat]]ed substance |
− | *2 a : the [[invisible]] vapor into which [[water]] is converted when heated to the [http://en.wikipedia.org/wiki/Boiling_point boiling point] | + | *2 a : the [[invisible]] vapor into which [[water]] is converted when heated to the [https://en.wikipedia.org/wiki/Boiling_point boiling point] |
| :b : the mist formed by the [[condensation]] on cooling of [[water]] [[vapor]] | | :b : the mist formed by the [[condensation]] on cooling of [[water]] [[vapor]] |
| *3 a : water vapor kept under [[pressure]] so as to supply [[energy]] for heating, cooking, or [[mechanical]] [[work]]; also : the [[power]] so generated | | *3 a : water vapor kept under [[pressure]] so as to supply [[energy]] for heating, cooking, or [[mechanical]] [[work]]; also : the [[power]] so generated |
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| In common [[speech]], steam most often refers to the visible white mist that [[condenses]] above boiling water as the hot [[vapor]] mixes with the cooler [[air]]. This mist consists of tiny droplets of [[liquid]] [[water]]. [[Pure]] steam emerges at the base of the spout of a steaming kettle where there is no visible vapor. | | In common [[speech]], steam most often refers to the visible white mist that [[condenses]] above boiling water as the hot [[vapor]] mixes with the cooler [[air]]. This mist consists of tiny droplets of [[liquid]] [[water]]. [[Pure]] steam emerges at the base of the spout of a steaming kettle where there is no visible vapor. |
| | | |
− | [[Pure]] steam is a [[transparent]] [[gas]]. At [[standard]] [[temperature]] and [[pressure]], pure steam (unmixed with [[air]], but in [[equilibrium]] with liquid water) occupies about 1,600 times the volume of an [[equal]] [[mass]] of liquid water. In the [[atmosphere]], the partial [[pressure]] of [[water]] is much lower than 1 atm, therefore [[gaseous]] water can exist at [[temperatures]] much lower than 100 °C (212 °F) (see [http://en.wikipedia.org/wiki/Water_vapor water vapor] and [http://en.wikipedia.org/wiki/Humidity humidity]).[http://en.wikipedia.org/wiki/Steam] | + | [[Pure]] steam is a [[transparent]] [[gas]]. At [[standard]] [[temperature]] and [[pressure]], pure steam (unmixed with [[air]], but in [[equilibrium]] with liquid water) occupies about 1,600 times the volume of an [[equal]] [[mass]] of liquid water. In the [[atmosphere]], the partial [[pressure]] of [[water]] is much lower than 1 atm, therefore [[gaseous]] water can exist at [[temperatures]] much lower than 100 °C (212 °F) (see [https://en.wikipedia.org/wiki/Water_vapor water vapor] and [https://en.wikipedia.org/wiki/Humidity humidity]).[https://en.wikipedia.org/wiki/Steam] |
| ==See also== | | ==See also== |
− | *'''''[http://en.wikipedia.org/wiki/Industrial_Revolution Industrial Revolution]''''' | + | *'''''[https://en.wikipedia.org/wiki/Industrial_Revolution Industrial Revolution]''''' |
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| [[Category: General Reference]] | | [[Category: General Reference]] |