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Results tagged with black-holes
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user 153583
A black hole is a region of spacetime from which nothing can escape. More formally, the future light cone of any observer within the black hole is completely contained in the black hole, and the black hole region is not within the past light cone of any observer that goes to spatial infinity in an infinite amount of time.
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What is the speed of sound in black hole?
The idea here is that the speed of sound in more dense object is more. for $e.g.$ $v_{Aluminium} = 6420 m/s$, $v_{water} = 1498 m/s$ and $v_{air}= 346 m/s$
As the density of medium goes on increas …
