The first semester of an undergraduate physics course invariably spends a lot of time on two big ideas: The momentum principle and the work energy principle. Both deal with forces acting on an object, ...

In this educational film, scientist pilot Owen Garot discusses the principles of conservation laws demonstrated during the Skylab missions in the 1970s. He explains conservation of angular momentum ...

Albert Einstein’s simple yet powerful equation revolutionized physics by connecting the mass of an object with its energy for the first time. It is perhaps the most famous equation in the world, and ...

Discover how Einstein’s theory of special relativity reshaped physics by linking space, time, mass, and energy in a universe governed by the speed of light. Albert Einstein's 1905 theory of special ...