Recent content by OlegKmechak

In special relativity time and space are same things(with precission to signature). So from this point of view momentum P and energy E are same things(vector in 4-d space) or isn't it? Sory, it is hard to me to explain what I want to find out :) I will take a little break

Hello all, I grow up in Sokal(western Ukraine), and in age of 10 year my step father told me story about atoms construction. Back there it sounded very surreallistic and interesting. After many years.. I have behind me university in Lviv(theoretical physics) and Computational Physics in...

dP = F dt dE = F dr or if we introduce ds = (dt, dr) (dP, dE) = F ds And both dP and dE are constant in closed system. Some questions: - How does its implies on definition of Force? - Is there some clever geometrical interpretation of Force? - Why P and E seems almost interchengable?