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Theme Changer

 Topic: B4 BB!

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  • Re: B4 BB!
     Reply #30 - July 05, 2009, 08:05 PM
    Quote from: J4m3z on July 05, 2009, 11:05 AM
    How did you get to those 3 scenarios about the universe being different shapes in different scenarios?

    Erm, the first paragraph and the second paragraph are independent of each other?
    Islam: where idiots meet terrorists.
  • Re: B4 BB!
     Reply #31 - July 05, 2009, 09:09 PM
    Quote from: J4m3z on July 05, 2009, 12:17 AM
    When a shrapnel bomb explodes, do the pieces accelerate to begin with or do they start decelerating immediately?

    As Zaephon said, the universe is accelerating. Scientists are wondering whether gravity may change behavior at large distances and turn into a 'repellent' force. Dark energy/matter is also being used to try and explain it however we don't even know what that even is.
    ~My story~
    ~Collection of unethical hadiths/surahs~
  • Re: B4 BB!
     Reply #32 - July 05, 2009, 09:13 PM
    I'm just saying cuz if it doesn't accelarate at all then the fact the speed of the universe expanding is accelerating would be quite strange
    The unlived life is not worth examining.
  • Re: B4 BB!
     Reply #33 - July 05, 2009, 09:32 PM
    Quote from: IsLame on July 05, 2009, 11:22 AM
    If the universe is not infinite, whats it expaning into i.e. what is on the outside of the universe?

    Or are we seeing our local universe as a finite sphere but may be contained within a larger megauniverse which may be infinite in nature?
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  • Re: B4 BB!
     Reply #34 - July 05, 2009, 09:52 PM
    Quote from: IsLame on July 05, 2009, 09:32 PM
    Or are we seeing our local universe as a finite sphere but may be contained within a larger megauniverse which may be infinite in nature?

    I don't know anything about this. It is generally assumed that the universe is expanding into vacuum.
    Islam: where idiots meet terrorists.
  • Re: B4 BB!
     Reply #35 - July 05, 2009, 09:59 PM
    Thats how I have always seen it. Perhaps the megauniverse, is the same thing as the vacuum, and is infinite.
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  • Re: B4 BB!
     Reply #36 - July 05, 2009, 11:01 PM
    I never thought of the universe as expanding into anything that already exists, rather, the universe "creates" space as it expands. To say that it expands into a vacuum is to say that it expands into space that is already there.
    The unlived life is not worth examining.
  • Re: B4 BB!
     Reply #37 - July 05, 2009, 11:03 PM
    good point
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  • Re: B4 BB!
     Reply #38 - July 07, 2009, 09:20 AM
    The universe is thought to be boundary-less (in other words - infinite). When we say the universe is expanding, we mean that matter is expanding (such as the galaxies, etc).
    ~My story~
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  • Re: B4 BB!
     Reply #39 - July 07, 2009, 09:30 AM
    Actually I can not grasp the true meaning of infinte? Cry  If we (hypothetically speaking) have a rocked that does not need fuel and can travel in the fastest speed possible and launch it in the outer space!!! Where the heck it would go?? This is crazy subject!!! finmad
    ...
  • Re: B4 BB!
     Reply #40 - July 07, 2009, 09:36 AM
    Quote from: RIBS on July 07, 2009, 09:30 AM
    Actually I can not grasp the true meaning of infinte? Cry  If we (hypothetically speaking) have a rocked that does not need fuel and can travel in the fastest speed possible and launch it in the outer space!!! Where the heck it would go?? This is crazy subject!!! finmad

    It would go on forever and never reach the end
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  • Re: B4 BB!
     Reply #41 - July 07, 2009, 09:40 AM
    It would keep on going. Perhaps there are other universes out there?

    (And keep in mind, basically everything said in this thread is mainly theoretical).
    ~My story~
    ~Collection of unethical hadiths/surahs~
  • Re: B4 BB!
     Reply #42 - July 07, 2009, 09:51 AM
    According to NASA the shape of the universe is actually flat (http://map.gsfc.nasa.gov/universe/uni_shape.html)
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  • Re: B4 BB!
     Reply #43 - July 07, 2009, 10:07 AM
    Interesting, thanks IsLame
    ~My story~
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  • Re: B4 BB!
     Reply #44 - July 07, 2009, 10:45 AM
    No, the universe is not infinite. If it was infinite it wouldn't be expanding now, would it?  Tongue

    If you were to fire a rocket that could go on forever and ever and was going faster than the universe then you would eventually arrive at the same spot again. That's what I was taught anyway, and I used to get into wierd discussions like, what if you tried turning left when the universe was forcing you to start turning right, so that you would be going straight again lol.

    My guess is you'd probably burst out of space and land in heaven.
    The unlived life is not worth examining.
  • Re: B4 BB!
     Reply #45 - July 07, 2009, 10:48 AM
    Quote from: J4m3z on July 07, 2009, 10:45 AM
    No, the universe is not infinite. If it was infinite it wouldn't be expanding now, would it?  Tongue

    As Peru said, the matter is expanding, not the universe

    Quote
    If you were to fire a rocket that could go on forever and ever and was going faster than the universe then you would eventually arrive at the same spot again.

     
    I dont know what you are on about here.
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  • Re: B4 BB!
     Reply #46 - July 07, 2009, 10:55 AM
    I meant faster than the universe is expanding, sorry. If your going slower than the universe is expanding then you would keep going in the same direction. But if your going faster then you will eventually turn back on yourself.

    And as for "matter is expanding but not the universe". How does that make sense? What do you understand by the word "matter"? If there is space, there is matter, right? Even a vacuum is material.
    The unlived life is not worth examining.
  • Re: B4 BB!
     Reply #47 - July 07, 2009, 11:21 AM
    Quote from: J4m3z on July 07, 2009, 10:55 AM
    I meant faster than the universe is expanding, sorry. If your going slower than the universe is expanding then you would keep going in the same direction. But if your going faster then you will eventually turn back on yourself.

    Again, matter is expanding not the universe. 

    Quote
    And as for "matter is expanding but not the universe". How does that make sense? What do you understand by the word "matter"? If there is space, there is matter, right? Even a vacuum is material.

    Everything is not matter.  Anti-matter, for example, is what created the Big Bang when it reacted with matter to create light thus producing simple elements such as hydrogen, the building blocks of the universe and life.

    Matter is something that contains neutrons, electrons or protons.  This particular vacuum does not.

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  • Re: B4 BB!
     Reply #48 - July 07, 2009, 03:03 PM
     Cheesy now I understand why they created the "God created everything" theory!!
    ...
  • Re: B4 BB!
     Reply #49 - July 07, 2009, 03:06 PM
    Quote from: J4m3z on July 07, 2009, 10:55 AM
    I meant faster than the universe is expanding, sorry. If your going slower than the universe is expanding then you would keep going in the same direction. But if your going faster then you will eventually turn back on yourself.

    I was taught this too but I'm not sure if it is an outdated view. According to Hawking the universe has no boundary.
    Quote
    And as for "matter is expanding but not the universe". How does that make sense? What do you understand by the word "matter"? If there is space, there is matter, right? Even a vacuum is material.

    I guess 'the universe' it means 'visible matter' rather than fluctuations. I'll look up more on this when I have time (I'm no scientist so nobody take my word on anything, I can easily misinterpret what I read).

    Quote
    Everything is not matter.  Anti-matter, for example, is what created the Big Bang when it reacted with matter to create light thus producing simple elements such as hydrogen, the building blocks of the universe and life.

    Anti-matter is matter. It is simply matter with the opposite charge (such as an electron with a positive charge; which is called a positron). Antimatter didn't create the big bang, the big bang created anti-matter and matter. It should create equal amounts of the stuff but for some reason we seem to have more matter than anti-matter, this is a mystery we haven't solved yet.

    We don't know what created the big bang.

    As a side note, we can create anti-matter in particle accelerators. We have so far managed to produce an anti-hydrogen and an anti-helium isotope.
    ~My story~
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  • Re: B4 BB!
     Reply #50 - July 07, 2009, 05:11 PM
    Quote from: IsLame on July 07, 2009, 11:21 AM
    Again, matter is expanding not the universe. 
    Everything is not matter.  Anti-matter, for example, is what created the Big Bang when it reacted with matter to create light thus producing simple elements such as hydrogen, the building blocks of the universe and life.

    Matter is something that contains neutrons, electrons or protons.  This particular vacuum does not.




    So which matter is expanding exactly?
    The unlived life is not worth examining.
  • Re: B4 BB!
     Reply #51 - July 07, 2009, 05:28 PM
    Quote from: J4m3z on July 07, 2009, 05:11 PM
    So which matter is expanding exactly?

    Take a look at the NASA link I posted, the matter in the universe is moving outwards.
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  • Re: B4 BB!
     Reply #52 - July 07, 2009, 06:08 PM
    Quote from: J4m3z on July 07, 2009, 05:11 PM
    So which matter is expanding exactly?

    'Real matter'. The matter you were talking about (the ones in vacuums) are virtual matter. The matter that makes up galaxies and stuff is what is expanding.
    ~My story~
    ~Collection of unethical hadiths/surahs~
  • Re: B4 BB!
     Reply #53 - July 07, 2009, 06:40 PM
    Does anyone know if the universe includes, or excludes, this virtual matter or does it depend on which definition of the universe you take?
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  • Re: B4 BB!
     Reply #54 - July 07, 2009, 09:58 PM
    I don't understand what you mean IsLame, can you clarify?
    ~My story~
    ~Collection of unethical hadiths/surahs~
  • Re: B4 BB!
     Reply #55 - July 07, 2009, 10:01 PM
    Uhm, I thought it was space that was expanding. Not "matter".

    i.e. the distance between two static points in space with 0 velocity is increasing simply because space itself is espanding
    Do not look directly at the operational end of the device.
  • Re: B4 BB!
     Reply #56 - July 07, 2009, 10:13 PM
    in this context, they mean the same thing
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  • Re: B4 BB!
     Reply #57 - July 07, 2009, 11:13 PM
    Islame you have just been arguing that matter is expanding, not the universe, and now your saying that matter and the universe is technically the same thing. Do you know what you're talking about?
    The unlived life is not worth examining.
  • Re: B4 BB!
     Reply #58 - July 08, 2009, 07:42 AM
    In this context I assume by space Tlaloc means the same thing as matter, something that we could technically fly a plane in, and not the vacuum/ virtual matter.   
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  • Re: B4 BB!
     Reply #59 - July 08, 2009, 07:44 AM
    Quote from: IsLame on July 07, 2009, 06:40 PM
    Does anyone know if the universe includes, or excludes, this virtual matter or does it depend on which definition of the universe you take?

    Includes it. Has too, because the virtual matter pops in an out of existence all the time in this universe. Basically, this universe runs on quantum mechanics and virtual particles are a manifestation of quantum mechanics so we get lots of them.  Smiley
    Devious, treacherous, murderous, neanderthal, sub-human of the West. bunny
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