103,025
edits
Changes
From Nordan Symposia
Jump to navigationJump to searchCreated page with 'File:lighterstill.jpgright|frame ==Etymology== [http://nordan.daynal.org/wiki/index.php?title=English#ca._1100-1500_.09THE_MIDDLE_ENGLISH_PERIO...'
[[File:lighterstill.jpg]][[File:Steam_locomotive.jpg|right|frame]]
==Etymology==
[http://nordan.daynal.org/wiki/index.php?title=English#ca._1100-1500_.09THE_MIDDLE_ENGLISH_PERIOD Middle English] stem, from [http://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]
==Definitions==
*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]
: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
:b : active [[force]] : [[power]], [[momentum]] <got there under his own steam> <sales began to pick up steam>; also : [[normal]] [[force]] <at full steam>
:c : pent-up [[emotional]] [[tension]] <needed to let off a little steam>
*4 a : steamer 2a b : [[travel]] by or a trip in a steamer
==Description==
'''Steam''' is either mist (as seen from a kettle), or the [[gas]] [[phase]] of [[water]] (water 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]
==See also==
*'''''[http://en.wikipedia.org/wiki/Industrial_Revolution Industrial Revolution]'''''
==Etymology==
[http://nordan.daynal.org/wiki/index.php?title=English#ca._1100-1500_.09THE_MIDDLE_ENGLISH_PERIOD Middle English] stem, from [http://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]
==Definitions==
*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]
: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
:b : active [[force]] : [[power]], [[momentum]] <got there under his own steam> <sales began to pick up steam>; also : [[normal]] [[force]] <at full steam>
:c : pent-up [[emotional]] [[tension]] <needed to let off a little steam>
*4 a : steamer 2a b : [[travel]] by or a trip in a steamer
==Description==
'''Steam''' is either mist (as seen from a kettle), or the [[gas]] [[phase]] of [[water]] (water 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]
==See also==
*'''''[http://en.wikipedia.org/wiki/Industrial_Revolution Industrial Revolution]'''''
