Convert attojoule to horsepower (metric) hour
Please provide values below to convert attojoule [aJ] to horsepower (metric) hour [hp*h], or Convert horsepower (metric) hour to attojoule.
How to Convert Attojoule to Horsepower (Metric) Hour
1 aJ = 3.77672671473307e-25 hp*h
Example: convert 15 aJ to hp*h:
15 aJ = 15 × 3.77672671473307e-25 hp*h = 5.6650900720996e-24 hp*h
Attojoule to Horsepower (Metric) Hour Conversion Table
| attojoule | horsepower (metric) hour |
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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.
Horsepower (Metric) Hour
A unit of energy representing the amount of work done by one horsepower over one hour, equivalent to 745.7 joules.
History/Origin
The horsepower hour was historically used to quantify energy in mechanical and engineering contexts, especially in the era of steam and early engines, but has largely been replaced by standard energy units like joules and kilowatt-hours.
Current Use
It is rarely used in modern practice, but may still appear in legacy systems or specific industrial applications to measure energy output or consumption related to horsepower-rated equipment.