...Therefore, if we are to make the law of conservation of energy valid in such cases, we must consider not only mechanical work but also heat. Until around the 18th century, heat was thought to be a type of weightless substance called caloric, and AL Lavoisier and others even included it in the table of elements. Based on this caloric theory, NLS Carnot explained the principle of the steam engine, which was still in development at the time, in terms of the flow of caloric (1824). ... *Some of the terminology that mentions "caloric" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…したがってこのような場合にもエネルギー保存則を成り立たせようとすると,力学的仕事だけでなく熱まで含めて考えねばならない。熱については18世紀ごろまでは熱素(カロリックcaloric)というある種の重さのない物質であるという考えがあり,A.L.ラボアジエなどはこれを元素表の中に記したほどであった。N.L.S.カルノーはこの熱素説に基づいて,当時発達途上にあった蒸気機関の原理を,熱素の流れによって説明した(1824)。… ※「カロリック」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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