4 ms·
Not quite. Point singularities can't spin, and since a black hole with no spin as about as possible as real mass with a temperature of absolute zero, every blac
by Causality1 5y ago
Not quite. Point singularities can't spin, and since a black hole with no spin as about as possible as real mass with a temperature of absolute zero, every black hole we're ever likely to observe is actually a ringularity or other two-dimensional configuration.
- sli 5y agoThanks for this comment, it was enlightening. I'd never much thought about this because physics is really not my forte, but after a few minutes of thinking about it, it's really intuitive why a point singularity can't spin. I can't explain it in any properly rigorous or technical way, but it makes no sense that someone could (by convention, of course) designate a "front" and "rear" to a mass with zero length in every direction.
- deleted 5y ago[deleted]
- heavenlyblue 5y agoWhat does it mean “to spin” in this case?
- renewiltord 5y agoIt means the black hole has angular momentum, which is detectable due to the resultant frame dragging (effect of the spinning on the spacetime around it) and presumably also due to the flattening of the sphere of the event horizon.