This is a maintenance category, used for maintenance of the Wikipedia project. It is not part of the encyclopedia and contains non-article pages, or groups articles by status rather than subject. Do not include this category in content categories.

Administrators: Please do not delete this category as empty! This category may be empty occasionally or even most of the time.

This category for physics articles which are of Mid importance within physics on this scale. Place articles in this category by typing this on the article's talk page:

{{physics|class=XXX|importance=Mid}}

See also Category:Physics articles by quality.