A call number is like a book's address; it tells you where to find a book in the library's collection. Call numbers are arranged alphabetically, and then by whole number (everything before the first period in the call number).
The following call number ranges are where you'll find most of our books on Physics. The Library of Congress Classification Outline provides a full guide to call numbers.
Subclass QB - Astronomy
Subclass QC - Physics
Dictionaries, encyclopedias, etc. from a variety of sources.
Reference books by Oxford University Press, including the Oxford Digital Reference Shelf.
Online reference works from a variety of publishers.