O, wrap up meat, parcels: various uses, thousand and one things.
Definitions of a calorie fall into two classes:
▪ The small calorie or gram calorie (symbol: cal) approximates the energy needed to increase the temperature of 1 gram of water by 1 °C. This is about 4.2 joules.
▪ The large calorie, kilogram calorie, or food calorie (symbol: Cal) approximates the energy needed to increase the temperature of 1 kilogram of water by 1 °C. This is exactly 1,000 small calories or about 4.2 kilojoules. It is also called the nutritionist’s calorie.
In an attempt to avoid confusion, the large calorie is sometimes written as Calorie (with a capital C). (…) The gram calorie, however, is too small a unit for use in nutritional contexts. Instead, the kilocalorie (symbol: kcal) or large calorie is used. In this context calorie and kilocalorie are equivalent.
photos { Irving Penn | Oliver Schwarzwald }
