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).
(2) As a unit of energy, it is defined as the amount of energy required to raise the temperature of one kilogram of water by one degree Celsius. Or the energy expended in one second by one ampere current against a resistance of one ohm.