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International System of Units (view source)
Revision as of 01:00, January 8, 2009
, 01:00, January 8, 2009→Joule
=== Work and Power ===
=== Work and Power ===
==== Joule ====
==== Joule ====
The '''joule''' (symbol J, named for [[James Joule]]) is that amount of [[energy]] required to do the ''work'' of exerting a force of one newton over a distance of one meter. To calculate, multiply force by distance.
The '''joule''' (symbol J, named for [[James Joule]]) is that amount of [[energy]] required to do the ''work'' of exerting a force of one newton over a distance of one meter. To calculate, multiply force by distance, which reveals a joule is a Newton-meter or <math>N/m</math>
==== Watt ====
==== Watt ====
The '''watt''' (symbol W, named for [[James Watt]]) is the [[power]] required to do one Joule of work in one second. To calculate, divide work by time.
The '''watt''' (symbol W, named for [[James Watt]]) is the [[power]] required to do one Joule of work in one second. To calculate, divide work by time.