Physics (from Greek from φυσικός (physikos): natural, from φύσις (physis): Nature) is the study of energy and its interaction with matter (see chemistry, biology). Because of the primacy of energy in terms of the history of the universe, because all matter must interact with energy to express its properties and engage in transformations, and because energy is the key player when matter is decomposed into its most basic parts, physics is often considered to be the fundamental science.

How to navigate the categories

The alphabetized links above can be used to get to the subcategory you seek. For example, to find Category:Spectroscopy, click the S link above. You will then see the subcategories beginning with S, as well as the categorized physics articles beginning with S. Alternatively, click on the next 200 or previous 200 links on this category page.

See also: How to add categories to the Physics articles

Subcategories

Articles in category "Physics"