Physics · Gravitational Lensing
In the context of general relativity and gravitational lensing, how is spacetime defined?
- 1A single four-dimensional continuum combining three dimensions of space and one dimension of time✓
- 2A static three-dimensional grid where time passes independently at a constant rate
- 3A physical medium composed of dark matter that flows around massive celestial bodies
- 4The region of outer space where the gravitational force of a star drops to absolute zero
Correct answer
A single four-dimensional continuum combining three dimensions of space and one dimension of time
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