作者無聊乏輸

http://zebu.uoregon.edu/~js/glossary/unified_field_theory.html

Unified field theory, in particle physics, is an attempt to describe all fundamental forces and the relationships between elementary particles in terms of a single theoretical framework. Forces can be described by fields that mediate interactions between separate objects. In the mid-19th century James Clerk Maxwell formulated the first field theory in his theory of electromagnetism. Then, in the early part of the 20th century, Albert Einstein developed general relativity, a field theory of gravitation. Later, Einstein and others attempted to construct a unified field theory in which electromagnetism and gravity would emerge as different aspects of a single fundamental field. ...