AST112 EXAM 3

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Author:
ithuestad
ID:
114000
Filename:
AST112 EXAM 3
Updated:
2011-11-02 18:19:13
Tags:
black holes general relativity
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Description:
black holes and general relativity
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  1. What is a black hole?
  2. General Relativity
  3. PRINCIPLE OF EQUIVALENCE
  4. GRAVITY BENDS LIGHT
  5. PROOF OF THE GENERAL RELATIVITY
  6. GRAVITATIONAL LENSING
  7. SOLAR ECLIPSE OF 1919
  8. CURVATURE OF SPACETIME
  9. WARPED SPACE
  10. WHAT HAPPENS WHEN SPACE IS WARPED SO MUCH THAT NOT EVEN LIGHT CAN ESCAPE?
  11. BLACK HOLES HAVE MASS, ANGULAR MOMENTUM AND ELECTRICAL CHARGE
    • -MASS: AT A DISTANCE A BLACK HOLE EXERTS THE SAME GRAVITATIONAL FORCE SUCH AS ANY OTHER OBJECT
    • -Black holes SPIN RAPIDLY AS THEY FORM.Their fast rotation distorts space and time near the boundary of the blackhole.
  12. BLACK HOLE DIAGRAM
  13. EXPLORING THE SWARTZCHILD RADIUS
    • -THE SIZE OF A BLACK HOLE DEPENDS ON MASS
    • - SIZE OF A BLACK HOLE IS GIVEN BY A SIMPLE FORMULA
    • ANY OBJECT WITH A MASS CAN BECOME A BLACK HOLE IF IT CAN BE CRUSHED TO A SMALL ENOUGH RADIUS
  14. Falling into a Black Hole
    • TIDES: you can feel the gravity is stronger on your feet than on your head.
    • It feels like you are being stretched!
    • As you cross the event horizon, a distant observer sees you TURN redder.
    • time slows down (your clocks runslower and slower…) finally…you ARE A frozen image as
    • you cross the event horizon
  15. What to YOU see ?
    • …the black void is suddenly replaced by an unimaginable array of views.
    • You see outwards – light falls into the black hole butdoesn’t get out
    • You are lost to our universe forever.And within a few seconds, you are swept into the massive singularity at the center of the black hole and crushed into oblivion!
  16. WHAT YOU SEE... Unless….

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