热

Q1 Social Sciences African and Black Diaspora Pub Date : 2019-08-20 DOI:10.2307/j.ctvmd85m7.25

Alecia McKenzie

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引用次数: 16

摘要

我们常常把热说成是从一个物体流向另一个物体的一种物质;事实并非如此。相反，它是一种能量。热量单位:卡(cal) 1卡是使1克水的温度升高1摄氏度所需的热量。不要被愚弄了——我们食品标签上的卡路里真的是千卡(kcal或卡路里)，这是使1公斤水升高1摄氏度所需的热量。

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Heat

We often speak of heat as though it were a material that flows from one object to another; it is not. Rather, it is a form of energy. Unit of heat: calorie (cal) 1 cal is the amount of heat necessary to raise the temperature of 1 g of water by 1 Celsius degree. Don’t be fooled – the calories on our food labels are really kilocalories (kcal or Calories), the heat necessary to raise 1 kg of water by 1 Celsius degree.

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来源期刊

African and Black Diaspora Social Sciences-Cultural Studies

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