AST112 EXAM 3
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PROOF OF THE GENERAL RELATIVITY





WHAT HAPPENS WHEN SPACE IS WARPED SO MUCH THAT NOT EVEN LIGHT CAN ESCAPE?

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.


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

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

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!
