Recent content by Mircea Golumba

Thank you all. Just found this on another Q/A board: "There are a number of motivations for saying the total mass-energy of the universe is zero. One of them is the Hamiltonian constraint for ADM general relativity that has N H = 0, for N the lapse function." source This seem to resonate with...

On a sidenote, is it OK to assert that an Universe in accelerated expansion, as it was proved to be the case, is still flat?

Let me quote Stephen Hawking who sadly just passed away, in his book A Brief History of Time: The total energy of the universe is exactly zero. The matter in the universe is made out of positive energy. However, the matter is all attracting itself by gravity. Two pieces of matter that are...

Later edit: sorry, my formula above is wrong, please consider this instead: http://www.educatiarutiera.ro/wp-content/uploads/2017/03/sol592.png

Thanks for reply but oops, I just found about something called ”Buckingham π theorem” - details - that is apparently disregarded by Gnadik's formula. I intend to study more but I could really make use of somebody more experienced's insight.

Hi, this problem is bugging me for several days now. In ”200 Puzzling Physics Problems”, Gnadik, Honyek, Riley there is this Problem 59: The solution to this is an ingenious resort to dimensional analysis, as follows: Now, I don't have a problem with this. I wonder however, what if we...