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
Scientific Revolution introduced the term "scientific revolution", centering his analysis on Galileo. The term was popularized by Butterfield in his "Origins of Modern Science". Thomas Kuhn's 1962 work "The Structure of Scientific Revolutions" emphasized that different theoretical frameworks—such as Einstein's relativity theory and Newton's theory of gravity, which it replaced—cannot be directly compared. The transformation of scientific subject also concerns the social sciences. These inherit from a natural philosophy a dispute that authors like Francesco Bacone and Descartes take charge of following. This particular aspect is questioned. Thus arise disciplines that reflect the natural world with social laws. They are sociology, social