Universal Constants as Manifestations of Relativity

We study the possible interpretation of the “universal constants” by the classification of J.~M.~L'evy-Leblond. $\mathrm{\hslash }$ and $c$ are the most common example of constants of this type. Using Fock’s principle of the relativity w.r.t. observation means, we show that both $c$ and $\mathrm{\hslash }$ can be viewed as manifestations of certain relativity. We also show that there is a possibility to interpret the Boltzmann’s constant in a similar way, and make some comments about the relativistic interpretation of the constant spacetime curvature and gravitational constant $G$.