Abstract

In this review, we survey the history and status of the unification of physical laws. Starting from Newton’s unification of celestial and terrestrial laws, we recall Maxwell’s unification of electromagnetism and light, Einstein’s unification of spacetime and matter, and the unification of electromagnetic and weak interactions. We also mention some unsuccessful unification attempts like the unification of gravity and electromagnetism, the unification of quarks and leptons as well as the supersymmetric grand unification. Finally, we comment on the ongoing string theory which tries to unify all interactions.

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