Recent content by Jayantiprasad

hi, In principle you can but practically you can not , because : 1. It is not the density which is important for a black hole, but it is the mass. You need a lot of mass. 2. Roughly the size of a black hole is given by GM /c2, for the mass of sun I think is is about 3 km. 3. For...

hi, I am again reading Minkowski's 1908 paper(space and time), very soon I will put key points. Let us look at the few lines "Henceforth space by itself, and time by itself, are doomed to fade away into mere shadows, and only a kind of union of the two will preserve an independent reality"...

hi, 1. There is something which is called primordial power spectrum which plays an important role in deciding which scale (large/small) will become nonlinear first. In general, power spectrum is taken to be a power law (P(k) = k^n, -3<n<1,due to practical considerations). 2. If the...

Dear Garth, I am thankful for your explanation. Few days back I asked same question to David Deutsch, let me put his views here > Q. In the special theory of relativity, time is > identified as a fourth dimension of space-time with > involving light there. I do not know why space and >...

hi, In special theory of relativity time is considered as a fourth dimension of space-time, using speed of light.I am worried, why speed of light should be involved in a theory of space-time ? Space and time must exist in the absence of light also. So do not we need a theory of space-time in...