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    https://www.thenakedscientists.com/forum/index.php...

    https://www.thenakedscientists.com/forum/index.php?topic=71794.0
    https://www.scienceforums.net/topic/111313-experiment-to-test-wmg/?do=findComment&comment=1021368
  2. Thread: New member

    by geordief
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    That may be so.Personally though I do not have...

    That may be so.Personally though I do not have the intellectual "firepower" to go down that route.

    All my energy (in this area) is taken up with slowly learning as much as possible about the...
  3. Thread: New member

    by geordief
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    Hello(ola?) You English seems very good. I do...

    Hello(ola?)
    You English seems very good.
    I do not have a good understanding of Maxwell's electrodynamics but it is an interesting subject.

    The forum is quiet at the moment but perhaps there will...
  4. Nothing to do with me guv.

    Nothing to do with me guv.
  5. Thread: what is time?

    by geordief
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    I may be wrong but this site was set up to...

    I may be wrong but this site was set up to provide a space for hard science and I doubt you will get much uptake here.

    My own take is that with philosophy (which I think this is) you can "prove"...
  6. Do gravitational waves interact in any special...

    Do gravitational waves interact in any special way with Black Holes?

    Is it all just grist to the mill?
  7. Thread: what is time?

    by geordief
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    In Physics I understand time is defined in a way...

    In Physics I understand time is defined in a way that allows one to make accurate predictions.

    If you want to understand what "time actually is" then this is not any help

    As you say you might...
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    Really none of your business but since you have...

    Really none of your business but since you have asked for the fifth or sixth time I am a poor and obtuse learner with blind spots that can impede my thinking.

    I neither have the time nor the...
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    Why don't you just answer my last underlined...

    Why don't you just answer my last underlined question?(I have conceded one or two mistakes in your favour)
    In case you forgot this is my OP and I have posed my question in order to learn.

    Let me...
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    Why do you jump down my throat ?Do you ever ...

    Why do you jump down my throat ?Do you ever leave your device.?This is twice you have answered me so quickly before I have corrected my post(see above -again.)

    This is like the spider and the...
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    So are there 2D surfaces in spacetime which are...

    So are there 2D surfaces in spacetime which are used in the process of showing overall 3D+1 intrinsic curvature due to the presence of mass-energy? (say a surface with dimensions of [ct] and...
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    I would like to return to the OP if that is OK. I...

    I would like to return to the OP if that is OK. I will give a different answer to your first reply and perhaps you might give an answer to it (I think I am conceding you main point I think)
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    In my edited post (you answered so quickly I had...

    In my edited post (you answered so quickly I had not enough time to correct it ) I don't refer to time dilation but the curvature of spacetime due to gravity.

    I have heard that this is more due...
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    See I edited my post as I misspoke.Is that a...

    See I edited my post as I misspoke.Is that a better question?
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    So why is it that gravity in gravity wells) is...

    So why is it that gravity in gravity wells) is described as being more a result of the curvature of time than the curvature of space? (Pretty sure I heard that)
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    But there are separate values for temporal...

    But there are separate values for temporal curvature and spatial curvature.
    Do these values have to be calculated out of the EFE or can they be arrived at individually in a more direct way?
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    So you are apparently saying that the spatial...

    So you are apparently saying that the spatial curvature and the temporal curvature do combine to give the total space-time curvature.

    Are these components calculated separately ?
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    I put sum in quotes as I did not expect their...

    I put sum in quotes as I did not expect their contributions to "add"

    Are you saying to total spacetime curvature is not composed of its temporal and spatial parts?
    "It doesn't because there...
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    Is not the curvature of space-time the "sum" of...

    Is not the curvature of space-time the "sum" of (1) the curvature along increasing time and (2) the curvature along the increasing spatial axes?


    When those increments are viewed geometrically...
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    Intrinsic Curvature in GR

    As I have learned intrinsic curvature can be shown on 2 D surfaces


    The spacetime model ,however is 3D+1

    How ,broadly speaking is curvature assessed in that context?Are 2D surfaces within the...
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    OK I have read the main body of that link and...

    OK I have read the main body of that link and think I understand that a hypersurface is embedded in the manifold with 1 more dimensions than it has.

    Am I right though to think that there are...
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    No but I will now. :o And I'll get back...

    No but I will now. :o
    And I'll get back then......
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    I see my plumb line defeats the purpose of the...

    I see my plumb line defeats the purpose of the exercise as the measurements are no longer intrinsic.

    I think that regularly the car should lower its front/back wheels as required (and when moving...
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    Yes that works for me . But how exactly is...

    Yes that works for me .

    But how exactly is the car ,on a continuous basis kept aligned as it makes this journey ? What measurements are made to ensure that it follows this path exactly ? Would...
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    I am still not clear if a hypersurface is 2...

    I am still not clear if a hypersurface is 2 dimensional or [n-1] dimensional for a n-dimensional space.

    In particular in 4-D space-time does one work with 2-D surfaces (for example in...
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