physics

Definition: Physics is the science of matter, energy and the interactions between the two. Within this framework, physics encompasses essentially all of nature: the laws and properties of matter and the forces acting upon it, especially the causes (gravitation, heat, light, magnetism, electricity, quantum effects etc) that modify the general properties of bodies.

Physics is the study of motion – from objects as small as neutrinos to ones as massive as galaxies or even the entire universe – and forces – the interactions between bodies.

Physics is traditionally divided into a large number of subfields, including thermodynamics, quantum physics, electromagnetism, acoustics, optics, atomic physics, nuclear physics, cryogenics, relativity, solid-state physics, condensed matter physics, particle physics and plasma physics.

Also Known As: natural science, natural philosophy
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