Matter Fixation and Gravity: A Cosmological Consideration from the Perspective of Light Energy

This work is the fourth part of the five-paper series on the Cosmic Wave Equation. Series 4 introduces the concept of matter as fixed light energy and interprets gravity as arising from imbalances in surrounding energy density. Fluctuations and gradients of light energy manifest as attractive forces between matter, consistent with gravitational phenomena. This framework integrates the earlier concepts of wave fluctuations with cosmological matter interactions. It prepares the ground for the unified cosmological model presented in Series 5.