  It is shown that the Reissner-Nordstrom black hole is also a gravitational
Schwinger ball. It is also shown that both massless and massive-particle
gravitational Schwinger balls are thermodynamic systems by deriving the first
law of thermodynamics for them. Inconsistency between classical geometrical and
microscopic definitions of the horizon is discussed. We propose a new metric,
more consistent with microscopic picture of black hole, as gravitational
Schwinger ball, by speculations. It has some interesting features.
