A black hole of a kind supposed to result from the complete gravitational collapse of an electrically neutral and non-rotating body, having a physical singularity at the centre to which infalling matter inevitably proceeds and at which the curvature of space-time is infinite. A Schwarzschild radius is the radius of the boundary of a hole of this type.
- If a mass is squeezed smaller than its Schwarzschild radius it becomes a Black Hole.
- By the ‘size’ of a black hole we typically mean the Schwarzschild radius (or ‘event horizon’ as people like to say).
- If an object exists entirely within its Schwarzschild radius then it is referred to as a black hole.
Named after Karl Schwarzschild (1873–1916), German astronomer.
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