Calefaction comes from the Latin "calor" meaning "heated", and "facere" "to make." Generally, that it what the terms means: to heat, or make heated. In the modern sciences, the term "calefaction" shows up occasionally in relation to the fields of
cryogenics, geology, mineralogy, inorganic chemistry, material sciences, and both scientifically and commercially in the study and process of sintering.
One example of the usage of the term is given by the French chemist and pharmacologist
Pierre H. Boutigny, who became known for his "calefaction experiments," where he studied and expanded our understanding of what is known as the Leidenfrost Phenomenon, which appropriately describes the effect of a liquidon a heated (often metal) interface above and near the liquids boiling point.
The term calefaction has also been used in the manufacturing of
steam enginesand steam cars. Two examples of this are the Serpollet generator and the Paul Jacquot engine.
* [http://volcaniclightning.tripod.com/leidenfr.htm Leidenfrost effect]
* [http://www.stanleysteamers.com/modern_steam.htm Relationship of calefaction to the steam engine and cars]
* [http://pacificbook.com/search/item.php?anr=126235&PHPSESSID=3412c0f61960d91ee9e13fd0df80539b&PHPSESSID=3412c0f61960d91ee9e13fd0df80539b Boutibny's experiments]
* [http://www.wundersamessammelsurium.de/Warmes/Leidenfrost/ German site with pictures for the Leidenfrost effect]
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