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).
Metric (SI) unit of absorbed radiation, equal to 100 radiation absorbed doses (RAD). It is defined as the dose of 1 joule of radiant energy absorbed per kilogram of matter. Named after the UK pioneer of use of radiation in cancer treatment, Dr. L. Harold Gray (1905-1965).