1.4.5 Towards Unification of Forces We remarked in section 1.1 that unification is a basic quest in physics. Great advances in physics often amount to unification of different theories and domains. Newton unified terrestrial and celestial domains under a common law of gravitation. The experimental discoveries of Oersted and Faraday showed that electric and magnetic…

1.4.4 Weak Nuclear Force The weak nuclear force appears only in certain nuclear processes such as the p-decay of a nucleus. In β-decay, the nucleus emits an electron and an uncharged particle called neutrino. The weak nuclear force is not as weak as the gravitational force, but much weaker than the strong nuclear and electromagnetic…