Two prototype theories of everything -- The union of electricity and magnetism -- Particles and waves : the quantum world -- Einstein unifies space, time, and light -- Relativistic quantum fields and Feynman -- Neutrinos violating parity and the weak force -- Flavor changes via the weak force -- Electroweak unification via the Higgs Field -- Quarks, color, and the strong force -- Standard model triumphs and challenges -- How neutrino identity oscillates -- Conservation laws and symmetry : Emmy Noether -- Theoretical symmetries and mathematics -- Balancing force and matter : supersymmetry -- Why quarks and leptons? -- Newton's gravity unifies earth and sky -- Einstein's gravity bends space-time -- What holds each galaxy together : dark matter -- What pushes the universe apart : dark energy -- Quantum gravity : Einstein, strings, and loops -- From weak gravity to extra dimensions -- Big bang and inflation explain our universe -- Free parameters and other universes -- Toward a final theory of everything.
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