Energy Energy In physics, energy is the quantitative property that must be transferred to an object in order to perform work on, or to heat, the object. Energy is a conserved quantity; the law of conservation of energy states that energy can be converted in form, but not created or destroyed. The SI unit of energy is the joule, which is the energy transferred to an object by the work of moving it a distance of 1 metre against a force of 1 newton. Common forms of energy include the kinetic energy of a moving object, the potential energy stored by
The Logic of Scientific Discovery The Logic of Scientific Discovery The Logic of Scientific Discovery is a 1959 book about the philosophy of science by Karl Popper. Popper rewrote his book in English from the 1934 German original, titled "Logik der Forschung. Zur Erkenntnistheorie der modernen Naturwissenschaft", which literally translates as, "Logic of Research: On the Epistemology of Modern Natural Science"'. Popper argues that science should adopt a methodology based on falsifiability, because no number of experiments can ever prove a theory, but a reproducible experiment or observation can refute one. According to Popper: "non-reproducible single occurrences are of no significance to science. Thus a