Physics (Greek: physis–φύσις meaning "nature") is the natural science which examines basic concepts such as mass, charge, matter[1] and its motion and all that derives from these, such as energy, force and spacetime.[2] More broadly, it is the general analysis of nature, conducted in order to understand how the world and universe behave.[3]
The index of physics articles is split into multiple pages due to its size.
To navigate by individual letter use the table of contents below.