Chapter 2

How Is Energy Measured

Abstract

The units used to measure energy are varied, but it is useful to understand the equivalencies between those units. Where do we get our energy from today? Are energy sources different in different countries according to the local resources? Many units of energy have a historical basis. Understanding this basis helps us to understand the reason for the many and varied units of energy. Each unit can be related to the others using unit conversions.

Keywords

units

joules

British thermal units

calories

watts

kilowatt-hours

The units for energy are surprisingly varied, but it is useful to understand the equivalencies between the different units and the reason for their existence. To derive the units for energy, it is necessary ...

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