Why Sky and Sea Appear Blue: A USP Field Theory Perspective

This document redefines the classic explanation of why the sky and sea appear blue, using the logic of the USP Field Theory. Rather than relying solely on UV filtering or Rayleigh scattering, it introduces a more comprehensive model based on field re-emission, brightness contrast, and ambient color blending. With a key comparison to Mars' blue sky under specific conditions, this paper highlights how perceived color emerges from the interaction between white light, atmospheric re-emission, and the dark background of space.