Anti-de Sitter space bell. It might be described as being the "opposite" of the surface of a sphere, which has a positive curvature. General relativity is a theory of the nature of time, space and gravity in which gravity is a curvature of space and time that results from the presence of matter or energy. Energy and mass are equivalent (as expressed in the equation "E" = "mc"), and space and time can be translated into equivalent units based on the speed of light ("c" in the "E" = "mc" equation). A common analogy involves the way that a dip in a flat
Lewin's equation Lewin's equation Lewin's equation, "B" = "f"("P", "E"), is a heuristic formula proposed by psychologist Kurt Lewin as an explanation of what determines behavior. The formula states that behavior is a function of the person and his or her environment: formula_1 Where formula_2 is behavior, formula_3 is Person, and formula_4 is the environment. This equation was first presented in Lewin's book, "Principles of Topological Psychology", published in 1936. The equation was proposed as an attempt to unify the different branches of psychology (e.g. child psychology, animal psychology, psychopathology) with a flexible theory applicable to all distinct branches of psychology. This