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).
Here are the units of measurement of energy, work and heat in various systems: 1) MKS system (Metric system): Calories or cal: This unit is very commonly used to indicate the energy content of the fuel and food, capacity of refrigeration and air-conditioning system, etc.