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Thread: measurement of the gravity of a singularity

  1. #1 measurement of the gravity of a singularity 
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    is'nt it possible to measure the power of the gravitation of a black hole singularity by observing the farthest object still affected by the black hole's gravity?

    tl;dr as a black hole dont affect/pull the whole universe, how can it have infinite gravity?


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    Quote Originally Posted by Sopeshark View Post
    is'nt it possible to measure the power of the gravitation of a black hole singularity by observing the farthest object still affected by the black hole's gravity?
    Why use a distant object? Any object that orbits the black hole can be used to determine the mass and thus its gravitational attraction. That is how they are detected, by the effect on orbiting bodies -- most times the other star in a binary system.

    tl;dr as a black hole dont affect/pull the whole universe, how can it have infinite gravity?
    What?


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    Brassica oleracea Strange's Avatar
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    Quote Originally Posted by Sopeshark View Post
    is'nt it possible to measure the power of the gravitation of a black hole singularity by observing the farthest object still affected by the black hole's gravity?
    The orbits of stars can be used to understand the mass of a black hole:
    Unprecedented 16-Year Long Study Tracks Stars Orbiting Milky Way Black Hole | ESO United Kingdom
    UCLA Galactic Center Group

    tl;dr as a black hole dont affect/pull the whole universe, how can it have infinite gravity?
    Gravity never "stops" so every object affects the whole universe (to an immeasurably small amount). Black holes are no different from any other massive object. They don't have infinite gravity (that would imply they have infinite mass).
    ei incumbit probatio qui dicit, non qui negat
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