Jump to content
Science Forums

Recommended Posts

Posted

Actually I've just had a look at the Friedmann equations and so now I know what a and k are. I find I was wrongly taking k to be Boltzmann's constant (seeing as Doublesox's equation contains temperature so is implicitly thermodynamic) but it is isn't that. In the context of Friedmann's equations, k is a dimensionless parameter, set to be between -1 and +1, according to whether a 3-spherical, flat or hyperbolic universe is being considered. So it is a sort of "shape" factor. a, on the other hand is the "scale factor", again dimensionless. 

 

So I need to re-do my dimension check on the second term in the LHS bracket. I now get something a lot simpler, viz. L²/T².  So it is still a nonsense, as one cannot add terms with different dimensions, but at least we don't have to worry about daft things like √M.  Maybe if Doublesox can add something to the first term with dimensions L², he can make it look more superficially plausible, at least.  :winknudge:

 

 

Oh is this you in a round-about way saying you may have been wrong... Let me help you articulate it better, you are wrong.

Posted

Hey, I have a delete button if you'd pm'd me instead I would have accommodated you even though you're incapable of creating your own interpretations. But since you're trying to get me banned..I won't!

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...
×
×
  • Create New...