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  • Increased

    18 45.00%
  • Decreased

    7 17.50%
  • Stayed the same

    5 12.50%
  • I dont know but i do care

    3 7.50%
  • I neither know nor care

    7 17.50%

the earth - heavier or lighter

This is a discussion on the earth - heavier or lighter within the A Brief History of Cprogramming.com forums, part of the Community Boards category; Originally Posted by Perspective well, considering a black hole is a star that becomes so massive it collapses on itself, ...

  1. #31
    S Sang-drax's Avatar
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    Quote Originally Posted by Perspective
    well, considering a black hole is a star that becomes so massive it collapses on itself, id say this isnt feasable. Not just the replacement but the existance of the entity itself.
    It is theoretically feasible. Black holes can be of any size and mass. The existance doesn't depend on mass, but on density. Scientists hope to be able to create extremly tiny black holes within particle accelerators in the future.
    If you build and blow up a really large hydrogen bomb (but possible to construct on earth) the extreme pressure would create a black hole.

    But for a star to turn into a black hole by its own gravity, it takes a lot more mass than the sun.
    Last edited by Sang-drax : Tomorrow at 02:21 AM. Reason: Time travelling

  2. #32
    Just one more wrong move. -KEN-'s Avatar
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    Quote Originally Posted by Govtcheez
    To be totally pedantic, would the lack of heat change the orbit?
    I don't think so; I don't imagine that heat has much to do with our orbit.

  3. #33
    Bob Dole for '08 B0bDole's Avatar
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    >To be totally pedantic, would the lack of heat change the orbit?
    Not at all. Orbits are solely based on gravity and (rare) collisions.

    And of course everyone got the answer right, pretty simple question.
    The theory of Black Holes has a lot of evidence supporting it, with no evidence defeating it. But like a lot of astronomy, it can't be proven for sure, so it's just a really respected theory.
    Hmm

  4. #34
    Bob Dole for '08 B0bDole's Avatar
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    >But for a star to turn into a black hole by its own gravity, it takes a lot more mass than the sun.

    It takes a totally different type of star. The Sun will eventually turn into a White Dwarf.
    Hmm

  5. #35
    Toaster Zach L.'s Avatar
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    But the difference is still mass. Although the larger star will have heavier elements in it, its initial composition could have been quite nearly identical to that of the Sun, and it would still form a black hole. The cutoffs, if I remember them correctly (absolutely no guarantee there) are:
    M < 3S(olar Masses) -> White Dwarf
    3S < M < 10S -> Neutron Star
    M > 10S -> Black Hole
    The word rap as it applies to music is the result of a peculiar phonological rule which has stripped the word of its initial voiceless velar stop.

  6. #36
    Bob Dole for '08 B0bDole's Avatar
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    >M < 3S(olar Masses) -> White Dwarf
    3S < M < 10S -> Neutron Star
    M > 10S -> Black Hole


    you're pretty close

    >different type of star.

    This should read- "different classification of star."

    Finals have me running on caffeine, nicotine, sugar & no sleep. Errors will insue.
    Hmm

  7. #37
    Toaster Zach L.'s Avatar
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    Ah... that makes sense... Yeah, those numbers were dragged out of my head from two years ago, so there is bound to be a bit of error.
    The word rap as it applies to music is the result of a peculiar phonological rule which has stripped the word of its initial voiceless velar stop.

  8. #38
    Bob Dole for '08 B0bDole's Avatar
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    it's no the absolute number that matters, we can get the point from using relative numbers.
    Hmm

  9. #39
    Crazy Fool Perspective's Avatar
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    >>The existance [of black holes] doesn't depend on mass
    agreed, but the creation does.

  10. #40
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    I voted that it has increased. Because all the matter on the earth has stayed on the earth. But we have brought stuff back from the moon.

    But then, I think, We have alot of man made satelites in space now. So it has most probably decreased..

    *curses click happy finger*


    Edit:

    People are using math to figure out.

    Ap is afraid

  11. #41
    Toaster Zach L.'s Avatar
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    Of course, this question is a bit ambiguous unless you specify a reference frame.
    The word rap as it applies to music is the result of a peculiar phonological rule which has stripped the word of its initial voiceless velar stop.

  12. #42
    S Sang-drax's Avatar
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    Quote Originally Posted by Perspective
    >>The existance [of black holes] doesn't depend on mass
    agreed, but the creation does.
    Not on mass, but pressure. A lot of mass means high pressure, but the high pressure can come from other sources, for example a hydrogen bomb detonating, or a particle accelerator.
    Last edited by Sang-drax : Tomorrow at 02:21 AM. Reason: Time travelling

  13. #43
    Crazy Fool Perspective's Avatar
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    Quote Originally Posted by Sang-drax
    Not on mass, but pressure. A lot of mass means high pressure, but the high pressure can come from other sources, for example a hydrogen bomb detonating, or a particle accelerator.
    i think we're on different wavelengths here. Im refering to the [natural] creation of a black hole from a star, a star has to exceed a certain mass to be a candidate for a black hole.

  14. #44
    Bob Dole for '08 B0bDole's Avatar
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    You're both right. Lamens terms, it depends on the stars mass, if it's going to become a black hole, but technically the process is pressure (that's how they're close to creating a very very small black hole in a particle accelerator).
    Hmm

  15. #45
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    Mass is directly proportional to the amount of heat (energy) in an object. Any substantial increase in heat to a given body yields an equivalent increase in mass (although inversely proportional to the speed of light squared). With respect to a reference frame where the big bang is assumed to be t=0, if the earth has increased in heat energy it is more massive, else it is less massive. Although I think the earth has actually cooled significantly, and I don't know what role organisms play in this matter.

    edit:
    How did you think of this question? It's intriguing nonetheless
    Last edited by Darkness; 12-17-2004 at 09:33 AM.
    See you in 13

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