http://tags.library.upenn.edu/tag/encyclopedias+physics PennTags Feed http://tags.library.upenn.edu/makerecord/voyager/255 http://tags.library.upenn.edu/makerecord/voyager/255 Over 900 articles authored by expert physicists that cover the scope of physics today. Topics covered include quantum mechanics, the big bang, subatomic particles, black holes, fiber optics, nanotechnology and relativity. Each article has a bibliography to enable you to find further readings on a topic.