The main path of the evolution of Physics is the complex path of overcoming infinities and various kinds of uncertainties. That is why it is impossible to create a unified or generalized physical theory free of uncertainties by means of universal constants with G, c, ħ -dimensionality and simple, one-dimensional variables - m, r, t. In order to build such a theory, a dimensionless universal constant is also necessary: Ա=〖2,7∙10〗^63=const. , as well as a dimensionless variable: 〖 N〗_Ա∈(1,Ա). We call that maximum value of the armonic variable N_Ա - the Armonic Constant and denote it with the capital letter "Ա" of the Armenian alphabet. In the article, we are trying to find the experimental confirmation of the constant numerical value of the Ա-constant, to discover the main law of cosmomicrophysical evolution and identify the role and significance of the Ա-constant in that law. The future General Physical Theory (GPT) should be a theory composed of four constants (G, c, ħ, Ա) and four variables (m,r,t,N_Ա).