In
physics,
Gravitation is a very important reference book on
Einstein's theory of gravity by
Charles W. Misner,
Kip S. Thorne, and
John Archibald Wheeler. Often considered the "Bible" of
General Relativity by researchers for its prominence, it is frequently called
MTW after its authors' initials, or "the Phone Book" due to its immense size. It was published by W.H. Freeman and Company in 1973. The book, a massive tome of over 1200 pages, covers many aspects of the
General Theory of Relativity and also considers some extensions and experimental confirmation. The book is divided into two "tracks", the second of which covers more advanced topics. MTW uses the
−+++ metric convention. The book is infamous for its use of boxes to add supplementary substance to the already thorough main text.