The methods of standardization or calibration employed have much in common even in the cases that appear most diverse.
The joule (/ËdÊuËl/), symbol J, is a derived unit of energy in the International System of Units. It is equal to the energy transferred (or work done) to an object when a force of one newton acts on that object in the direction of its motion through a distance of one metre (1 newton metre or NÂ·m).
So far, we have discussed energy in qualitative terms. In order to proceed, we must discuss energy quantitatively. That means, we need units for measuring quantities of energy and related concepts. We use the International system of units (SI units), which is based on the dimensions and basic units in Table 1.