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Understanding gravity

Discussion in 'Science and Technology' started by Cooky, Jan 1, 2020.

  1. Heyo

    Heyo Well-Known Member

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    It's called Terra in Latin and you will find that on planetary maps and in scify stories.
     
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  2. Heyo

    Heyo Well-Known Member

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    Yep. :)
     
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  3. Polymath257

    Polymath257 Think & Care
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    I had one physics professor say that the only thing we know about the graviton is that it is spin 2. That's ultimately because the metric of GR is a 2-tensor.
     
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  4. Polymath257

    Polymath257 Think & Care
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    But the *official* names are still 'the Earth' and 'the Moon' in spite of what Scifi fans would prefer.
     
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  5. Howard Is

    Howard Is Lucky Mud

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    Who ‘officially’ decides ?
     
  6. Polymath257

    Polymath257 Think & Care
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    The International Astronomical Union:

    International Astronomical Union | IAU

    This is the same organization that gives official names to things like asteroids, comets, as well as things like craters, mountains, etc on other planets.
     
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  7. Thief

    Thief Rogue Theologian

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    and Pluto is too small to carry the 'weight ' of a planet
     
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  8. Thief

    Thief Rogue Theologian

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    so yeah...
    your weight would be different as you stand unto one surface...….Earth
    as compared to another surface.....the Moon

    but your mass remains the same
     
  9. Bob the Unbeliever

    Bob the Unbeliever Well-Known Member

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    Terra? In SciFi stories, people from earth are often called "Terrains".

    Sounds better than Earthers, IMO. :) Or, Dirtworms. Ha!
     
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  10. Bob the Unbeliever

    Bob the Unbeliever Well-Known Member

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    And if you consider the Sun? Deep, too.
     
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  11. Heyo

    Heyo Well-Known Member

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    By what official authority?
    Afaik the "official" names by the International Astronomical Union are Terra and Luna.
    (And Pluto is not a planet. Get over it.)
     
    #71 Heyo, Jan 2, 2020
    Last edited: Jan 2, 2020
  12. Ouroboros

    Ouroboros Coincidentia oppositorum
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    Yup. hard to have New Terry (Ilus) unless we have the old Terra first. :)
     
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  13. Ouroboros

    Ouroboros Coincidentia oppositorum
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    True. But proper nouns shouldn't really have "the" in front of them. If they're the names, it should only be Earth and Moon, without the "the".
     
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  14. Ouroboros

    Ouroboros Coincidentia oppositorum
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    Sure. He's just a dog!

    [​IMG]
     
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  15. Ouroboros

    Ouroboros Coincidentia oppositorum
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    Ya inyalawdas.
     
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  16. Polymath257

    Polymath257 Think & Care
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    Look at the website I posted. Those are definitely NOT the official names.
     
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  17. Revoltingest

    Revoltingest I have the kavorka
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    You just made an enemy for life!
    [​IMG]
     
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  18. Polymath257

    Polymath257 Think & Care
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    Agreed, but even the IAU seems to be inconsistent on this one: International Astronomical Union | IAU
     
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  19. Heyo

    Heyo Well-Known Member

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    I stand corrected - and confused. The naming conventions are otherwise strictly mythological so that earth and moon stand out. (And have no unambiguous names as all local names are recognized.)
     
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  20. Milton Platt

    Milton Platt Well-Known Member

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    "Both sides"? The earth is a sphere. You are seeing a two dimensional representation of a three dimensional space. You have to use your imagination a bit.
     
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