(1) The amount of humidity (vapor pressure, gas behavior, and temperature effects) is the discipline of PHYSICS. (2) The change from gas to liquid (condensation) is PHYSICS (3) The chemical reaction of metal with water (rust/corrosion) is the discipline is CHEMISTRY (4) The biological degradation by moisture (mold growth) is biological CHEMISTRY. Since all of this could happen in a safe, I would say: EVERYBODY"S RIGHT!! 😄

Last edited by Jimmy W; 01/30/26 08:22 AM.