Conservation principles that some physical quantities remains constant through the change. Conservation principles began to play a central role in scientific theories from \(17^{th}\) century. Galileo, Descartes, Huygens, Leibniz, and Newton established their approaches to physics on the the principle of inertia: the principle that tells a body will undergo uniform rectilinear motion unless it is disturbed. There are many conservation principles but here we are only discussing three of them.
