Difference between revisions of "Calorie"
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| − | A '''calorie''' is a unit of measure of | + | A '''calorie''' is a unit of measure of [[energy]]. One calorie is equal to the amount of energy necessary to warm one gram of [[water]] from 14.5 degree [[Celsius]] to 15.5 °C at [[sea]] level. The "Calorie" on a [[nutrition]] label is actually different from the "calorie" or unit of measure for energy. The upper case "Calorie" is actually a kilocalorie, or 1,000 calories. |
The unit has been replaced by the Joule (1 cal = 4.1855 J) as standard unity of energy, it is not longer used except to express the amount of energy in food. | The unit has been replaced by the Joule (1 cal = 4.1855 J) as standard unity of energy, it is not longer used except to express the amount of energy in food. | ||
Revision as of 05:46, November 24, 2007
A calorie is a unit of measure of energy. One calorie is equal to the amount of energy necessary to warm one gram of water from 14.5 degree Celsius to 15.5 °C at sea level. The "Calorie" on a nutrition label is actually different from the "calorie" or unit of measure for energy. The upper case "Calorie" is actually a kilocalorie, or 1,000 calories.
The unit has been replaced by the Joule (1 cal = 4.1855 J) as standard unity of energy, it is not longer used except to express the amount of energy in food.