What is Spacetime?

Discussion in 'Astronomy, Exobiology, & Cosmology' started by Nobody, Oct 22, 2011.

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  1. Nobody

    Nobody Suspended Indefinitely Registered Senior Member

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    What is Space time?
     
    Nobody, Oct 22, 2011
    #1

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  3. cosmictraveler

    cosmictraveler Be kind to yourself always. Valued Senior Member

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    A watch worn by anyone who is in space.

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    Please Register or Log in to view the hidden image!

     
    cosmictraveler, Oct 22, 2011
    #2

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  5. Nobody

    Nobody Suspended Indefinitely Registered Senior Member

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    haha. You almost fooled me
     
    Nobody, Oct 22, 2011
    #3

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  7. prometheus

    prometheus viva voce! Registered Senior Member

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    Spacetime is a pseudoriemannian manifold that can bend and stretch giving us what we observe as gravity in general relativity.
     
    prometheus, Oct 22, 2011
    #4
  8. Pincho Paxton

    Pincho Paxton Banned Banned

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    It is Einstein's solution to letting go of his previous ideas.
     
    Pincho Paxton, Oct 23, 2011
    #5
  9. MacGyver1968

    MacGyver1968 Fixin' Shit that Ain't Broke Valued Senior Member

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    This is the amount of time that you must give your wife some space...after answering "yes" to her question "Does this dress make my butt look big?".

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    Last edited: Oct 23, 2011
    MacGyver1968, Oct 23, 2011
    #6
  10. river

    river

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    it is the mathematical four dimensional representation of an object at certain point , in its change of position in space
     
    river, Oct 23, 2011
    #7
  11. Dywyddyr

    Dywyddyr Penguinaciously duckalicious. Valued Senior Member

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    Er, no.
    Read Prometheus' post.
     
    Dywyddyr, Oct 23, 2011
    #8
  12. river

    river

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    I did

    but what does it mean Dywyddyr ?
     
    river, Oct 23, 2011
    #9
  13. Dywyddyr

    Dywyddyr Penguinaciously duckalicious. Valued Senior Member

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    Dywyddyr, Oct 23, 2011
    #10
  14. river

    river

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    river, Oct 23, 2011
    #11
  15. Dywyddyr

    Dywyddyr Penguinaciously duckalicious. Valued Senior Member

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    I fail to see your point (if you actually have one).
    Short answer: I did once. It's been too many decades since I had to do it for real.
     
    Dywyddyr, Oct 23, 2011
    #12
  16. river

    river

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    so why did you refer to a post that really you have no idea whether its true or not ?

    thats my point
     
    river, Oct 23, 2011
    #13
  17. Dywyddyr

    Dywyddyr Penguinaciously duckalicious. Valued Senior Member

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    Oh, you can't read...

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    In other words you don't have a point.
     
    Dywyddyr, Oct 23, 2011
    #14
  18. river

    river

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    oh I can and I did

    hence my post above
     
    river, Oct 23, 2011
    #15
  19. river

    river

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    refer to last post
     
    river, Oct 23, 2011
    #16
  20. Dywyddyr

    Dywyddyr Penguinaciously duckalicious. Valued Senior Member

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    Obviously you can't/ didn't:

    You asked:
    I replied:
    In other words it's something I used to do (and have done) but am now out of practice.
    Therefore your "conclusion" -
    Was entirely erroneous.

    Just as, many years ago, I could knock off the proof that angles in a triangle add up to 180 degrees, but would have extreme difficulty in doing so today. But, having done it in the past I am aware that is still true.
    Got it?

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    Dywyddyr, Oct 23, 2011
    #17
  21. river

    river

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    Was entirely erroneous.

    I got it back then

    my point is that you referred to a post you don't understand
     
    river, Oct 23, 2011
    #18
  22. Dywyddyr

    Dywyddyr Penguinaciously duckalicious. Valued Senior Member

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    So you agree your conclusion was wrong?

    Obviously you didn't get it.

    Never mind, carry on being clueless.
     
    Dywyddyr, Oct 23, 2011
    #19
  23. river

    river

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    supply the full context , please
     
    river, Oct 23, 2011
    #20
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