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( Physical quantity)
A physical quantity is a physical property that can be quantified. This means it can be measured and/or calculated and expressed in numbers. The value of a physical quantity Q is expressed as the product of a numerical value {Q} and a physical unit [Q]. If a certain value of power is written as then Usually, the symbols for physical quantities are chosen to be a single lower case or capital letter of the Latin or Greek alphabet written in italic type. Often, the symbols are modified by subscripts and superscripts, in order to specify what they pertain to — for instance Ep is usually used to denote potential energy and cp heat capacity at constant pressure.
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Physical quantity Subcategories
Physical quantity Articles
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