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**Unformatted text preview: **Recall from PHYS 114: v ESC = 2 GM EARTH R EARTH → c = 2 GM BH R BH R BH = 2 GM BH c 2 ? We used classical physics, but GR calculation gives the same result Schwarzschild radius: “ horizon ” of BH of mass M “ event horizon ” = radius such that nothing can escape (all light cones bend into the BH; “ future ” of any object there lies entirely inside the BH Most BHs have spin – stars spiral into them our solar system on the same scale 72 73 Unification of Fundamental Forces of Physics Electricity Magnetism Light Beta-decay Neutrinos Protons Neutrons Pions, etc. Earth Gravity Celestial Mech. Electromagnetism Weak Interaction Strong Interaction Universal Gravity Spacetime Geom. Electroweak Interaction “ Standard Model ” General Relativity ? 1864 Maxwell 1965 1971 Weinberg, Glashow & Salam 1973 1976-- 1687 Newton 1916 Einstein 2014? pre-20 th c. 20 th c. 1907 Einstein & Minkowski String theory? Supersymmetry? GUTs?...

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- Fall '09
- isac
- Physics, Mass, General Relativity, Black hole