Energy It is equal to the energy expended (or work done) in applying a force of one newton through a distance of one metre. However energy is also expressed in many other units not part of the SI, such as ergs, calories, British Thermal Units, kilowatt-hours and kilocalories, which require a conversion factor when expressed in SI units. The SI unit of energy rate (energy per unit time) is the watt, which is a joule per second. Thus, one joule is one watt-second, and 3600 joules equal one watt-hour. The CGS energy unit is the erg and the imperial and US
Dictionary of Scientific Biography Dictionary of Scientific Biography The Dictionary of Scientific Biography is a scholarly reference work that was published from 1970 through 1980. It is supplemented by the New Dictionary of Scientific Biography. Both these publications are comprised in an electronic version, called the Complete Dictionary of Scientific Biography. The "Dictionary of Scientific Biography" is a scholarly English-language reference work consisting of biographies of scientists from antiquity to modern times, but excluding scientists who were alive when the "Dictionary" was first published. It includes scientists who worked in the areas of mathematics, physics, chemistry, biology, and earth sciences. The work is notable