Which physicist coined the term 'black hole' in 1967?
Answer
John Archibald Wheeler
Which physicist coined the term 'black hole' in 1967?
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- Intermediate Intermediate difficulty.
- The Theory Of Relativity
Which German mathematician is co-named with Einstein in the action principle for general relativity?
Answer
David Hilbert
- Hard Hard difficulty.
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What exact vacuum solution models a rotating, uncharged black hole in general relativity?
Answer
Kerr metric
- Intermediate Intermediate difficulty.
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What dimensionless factor equals 1/sqrt(1−v²/c²) in special relativity?
Answer
Lorentz factor
- Hard Hard difficulty.
- The Theory Of Relativity
What spacetime is the maximally symmetric vacuum solution with a positive cosmological constant?
Answer
de Sitter space
- Intermediate Intermediate difficulty.
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What exact number is the Lorentz factor for an object at rest?
Answer
1
- Hard Hard difficulty.
- The Theory Of Relativity
What general-relativity effect is the precession of a gyroscope caused by spacetime curvature?
Answer
Geodetic effect