Convert attojoule to calorie (IT)
Please provide values below to convert attojoule [aJ] to calorie (IT) [cal (IT)], or Convert calorie (IT) to attojoule.
How to Convert Attojoule to Calorie (It)
1 aJ = 2.38845896627496e-19 cal (IT)
Example: convert 15 aJ to cal (IT):
15 aJ = 15 × 2.38845896627496e-19 cal (IT) = 3.58268844941244e-18 cal (IT)
Attojoule to Calorie (It) Conversion Table
| attojoule | calorie (IT) |
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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.
Calorie (It)
The calorie (cal) is a unit of energy traditionally used to quantify the amount of heat required to raise the temperature of one gram of water by one degree Celsius at standard atmospheric pressure.
History/Origin
The calorie was originally defined in the 19th century as a unit of heat energy in thermodynamics. It has historically been used in nutrition and physics, but has largely been replaced by the joule in scientific contexts. The 'small calorie' (cal) is distinct from the 'large calorie' (kcal), which is commonly used in food energy labeling.
Current Use
Today, the calorie is primarily used in nutrition to measure the energy content of foods and beverages, although the SI unit of energy, the joule, is increasingly preferred in scientific and technical fields.