  We study the interior of a Schwarzschild Black-Hole (B-H) using Relativistic
Quantum Geometry described in \cite{rb} and \cite{rb1}. We found discrete
energy levels for a scalar field from a polynomial condition for Heun Confluent
functions expanded around the Schwarzschild radius. From the solutions it is
obtained that the uncertainty principle is valid for each energy level of
space-time, in the form: $E_n\, r_{sh,n}=\hbar/2$. Temperature, entropy and the
B-H mass are dependent on the number of states in the B-H, such that the
Bekenstein-Hawking (BH) results are obtained in a limit case.
