Calories are also called kilocalories, and the unit of heat is equal to 1000 calories (calories), that is, the heat (symbol KCal) required for 1 kg water temperature increase, which is defined as 1 g water increase at 1 atmospheric pressure/kloc-0. A thermal unit is a unit of measurement used to express heat. The most commonly used calorie unit in nutrition is kilocalorie, and the derivative unit of the international system of units and China's legal measurement unit is joule.
Kilojoule is a unit of heat, joule (abbreviated as Joule) is a unit of heat and work in international units, and kilojoule refers to 1000 Joule. Nowadays, kilojoules are often used to measure the calories contained in food and the calories consumed in a certain exercise unit time. People generally control their weight by controlling the calorie intake of food and exercise.
Introduction to Joule
1 calorie =4. 19 joules, also marked with the capital letter c, is most commonly used in food labels, which is equivalent to the heat required to raise 1 000 grams of water from 14.5 degrees Celsius to 15.5 degrees Celsius at/atmospheric pressure. Calorie is an energy unit, which is still widely used in nutrition measurement and fitness manual. The international standard unit of energy is joule. As the legal unit of food calories, joules are widely used in Europe, while calories are used in the United States.
Calorie is the transliteration of French Calorie, which is the unit for calculating calories, and it is divided into big card and small card. 1 calorie is equivalent to the heat used to raise 1 liter of water to 1 degree Celsius at 1 standard atmospheric pressure; 1 calorie equals 1000 calories.
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