Convert attojoule to calorie (th)
Please provide values below to convert attojoule [aJ] to calorie (th) [cal (th)], or Convert calorie (th) to attojoule.
How to Convert Attojoule to Calorie (Th)
1 aJ = 2.39005736137667e-19 cal (th)
Example: convert 15 aJ to cal (th):
15 aJ = 15 × 2.39005736137667e-19 cal (th) = 3.58508604206501e-18 cal (th)
Attojoule to Calorie (Th) Conversion Table
| attojoule | calorie (th) |
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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 (Th)
The calorie (th) is a unit of energy used to quantify the amount of heat required to raise the temperature of one kilogram of water by one degree Celsius.
History/Origin
The calorie (th) was historically used in the context of thermochemistry and nutrition, originating from the calorie concept in the 19th century. It has largely been replaced by the joule in scientific contexts but remains in common use in some regions and fields.
Current Use
Today, the calorie (th) is primarily used in nutrition labeling and food energy measurements, especially in regions where the thermochemical calorie is still recognized, although the joule is the SI standard.