Physics is a branch of science. It studies matter, and all forces and their effects. Modern physics connects ideas about the four laws of symmetry and conservation of energy, momentum, charge, and parity. Physics can also be defined as “that department of knowledge which relates to the order of nature, or, in other words, to the regular succession of events”. One of the most fundamental scientific disciplines, the main goal of physics is to understand how the universe behaves. Physics is very important in the development of new technologies, such as airplanes, televisions, computers and nuclear weapons. Mechanics, a branch of physics, helped develop the mathematical field of calculus.