Foot-pound (energy) Foot-pound (energy) The foot pound-force (symbol: ft⋅lbf or ft⋅lb) is a unit of work or energy in the Engineering and Gravitational Systems in United States customary and imperial units of measure. It is the energy transferred upon applying a force of one pound-force (lbf) through a linear displacement of one foot. The corresponding SI unit is the joule. The foot-pound is often used to specify the muzzle energy of a bullet in small arms ballistics, particularly in the United States. "Foot-pound" is also used as a unit of torque (see "pound-foot (torque)"). In the United States this unit is often
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