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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 Betadecay 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? pre20 th c. 20 th c. 1907 Einstein & Minkowski String theory? Supersymmetry? GUTs?...
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 Spring '09
 isac
 Physics, Mass, General Relativity, Black hole

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