Physics

Physics is the most fundamental of the sciences. It explains how the physical world works and lies at the foundation of nearly all technical fields. All natural phenomena obey the laws of physics. Physicists express these laws in mathematical form, so that they can be applied to predict the behavior of all forms of matter and energy, ranging from the subatomic physics of quarks, gluons, nuclei, and electrons, to the astrophysics of planets, stars, black holes, and galaxies. Physics forms the...