Convert calorie (nutritional) to attojoule
Please provide values below to convert calorie (nutritional) [Cal] to attojoule [aJ], or Convert attojoule to calorie (nutritional).
How to Convert Calorie (Nutritional) to Attojoule
1 Cal = 4.1868e+21 aJ
Example: convert 15 Cal to aJ:
15 Cal = 15 × 4.1868e+21 aJ = 6.2802e+22 aJ
Calorie (Nutritional) to Attojoule Conversion Table
| calorie (nutritional) | attojoule |
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Calorie (Nutritional)
A calorie (Cal) is a unit of energy used to measure the amount of energy provided by food and beverages, specifically representing the amount of energy needed to raise the temperature of one kilogram of water by one degree Celsius.
History/Origin
The calorie was first introduced in the 19th century as a unit to quantify energy in nutrition. It has since become a standard measure in dietary and nutritional contexts, although the scientific community often prefers the joule as the SI unit of energy.
Current Use
Calories are widely used in nutrition to quantify the energy content of food and beverages, helping consumers manage dietary intake and energy balance. The term 'Calorie' with a capital 'C' typically refers to kilocalories (kcal), which are equivalent to 1,000 small calories.
Attojoule
An attojoule (aJ) is a unit of energy equal to 10^-18 joules.
History/Origin
The attojoule was introduced as part of the SI prefixes to measure extremely small amounts of energy, particularly in fields like nanotechnology and quantum physics, as the need to quantify very tiny energy scales grew.
Current Use
The attojoule is used in scientific research to measure minute energy quantities, such as in nanotechnology, quantum computing, and molecular biology, where energies involved are extremely small.