Chapter 23: Black Holes Flashcards
1
Q
What is the Escape speed concept?
A
The larger the mass of the massive object, the higher the speed needed to escape its gravity.
2
Q
What is the Schwarzschild rasius?
A
It is the radius or size of a the black hole.
3
Q
How are black holes detected?
A
They are found in X-ray binaries or unseen companion has high mass.(found at the center of every galaxy)
4
Q
What is general relativity?
A
No experiment performed inside a closed room can tell you whether you are at rest in the presence of gravity or accelerating in the absence of gravity.
5
Q
What are the 5 tests of general relativity?
A
- Deflection of starlight by sun’s gravity
- observe gravitational lenses (see stars that are behind objects)
- Mercury’s orbit precesses
- Gravitational redshifts
- Gravity waves (gravity curve spacetime)
6
Q
A
