Joules Meaning and Definition
Joules
Pronunciation
/ˈdʒuːlz/
Unit of energy
Definition
A unit of energy in the International System of Units (SI), equivalent to the energy expended when a force of one Newton is applied over a distance of one meter. It is often used to measure the energy output of devices or systems.
Etymology
The word “joule” is named after James Prescott Joule, an English physicist who first described the relationship between mechanical work and heat transfer.
Usage Notes
The word “joule” is often used in technical contexts, such as in engineering, physics, and chemistry. It is also used in everyday contexts to describe the energy output of devices, such as light bulbs or electric motors.
Cultural References
The word “joule” has appeared in several TV shows and movies, including “The Big Bang Theory” and “Back to the Future.”
Idiomatic Expressions or Phrases
“Joule per kilogram” is a common phrase used to describe the energy density of a substance or system.
Related Words or Phrases
- Watt
- Kilowatt-hour
- Calorie
Collocations
- Joule per kilogram
- Watt-hour
- Kilowatt-hour per day
Frequency of Use
The word “joule” is relatively rare in everyday language, but it is commonly used in technical and scientific contexts.
Common Misspellings
- Julie
- Jealous