Summary 10-43 sec 10-32 sec 101。sec 10-sec 100 sec 300000 years 19 10-18m 1016 Gev Gev 1 Ge 1 Mev ev Magnetism QED Electro Long range magnetism Electroweak Electricity Model Fermi Grand. Standard(Weak Theory Weak Force Unification model Short range Quantum QCD Nuclear Force Gravity Short range Su Unification Kepler Celestial Universal Gravity Long range Gravitation Einstein. Newton Terrestrial Galilei Gravi Theories. STRINGS? RELATIVISTIC/QUANTUM CLASSICAL