“当量”这个概念,在自然科学领域,用得很广。最有名的,是物理学中的那个用来表示热和功之间数量关系“热功当量”,即所谓“1卡热量同4.18焦耳的功相当”。这个结论是焦耳得出的,所以把他的名字拿来,充当了计量单位。焦耳是英国人,据说没怎么上过学,靠自学成才。他证明了“热” The concept of “equivalence” is widely used in the field of natural sciences. The best known is the one used in physics to represent the quantitative relationship between heat and work, the so-called “calorie equivalent of 4.18 Joules.” This conclusion is Jou drawn, so bring his name, as a unit of measurement. Joule is British, is said to have not learned, rely on self-taught. He proved that “hot”