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Hi,Thanks for taking the time to reply.@LeeEThanks for your interest in this work. I'm not sure I want to go there (unifying length and time) My initial idea was to build a visual matrix that can be used for very fast dimensional analysis. I describe this in: http://www.wbabin.net/science/hollo2.pdf [Links inactive - To make links active and clickable, login or click here to register] @Mr. ScientistThanks for commenting. I went to see the page ... When talking about G, I presume that you refer to the section calles "Dimensionless physical constants" at the bottom. It seems to be the only place where they explicitely mention it. In this case, I must say that I'm a bit disapointed. The section seems to mix the notions of numerical value and dimension. While the title of the section implies that G is a dimensionless quantity, nothing is provided here to support it. it is an assertion. Then the section explains the concept of natural units where some quantities see their numerical value "reduced" to 1 ... but their dimension is still the same, whatever it is.More radically (mathematically speaking), I think the demonstration I made using the cartesian product completely and absolutely invalidates the possibility that G could be dimensionless, don't you think?Regards,Lho

I'm still trying to understand the greater part of this - can i see this matrix in full form?