2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/136843Using considerations from the Quantum Zero Point Field and Thermodynamics, we show that the Planck Scale is the minimum (maximum mass) and the Photon Scale is the maximum (minimum mass) Scale in the universe. The arguments also deduce the residual cosmic energy of $10^{-33}eV$ observed lately.9 pages texGeneral Physicstext