Writers often use "luminance" not just to depict physical light, but as a symbolic element that bridges the seen and unseen, the emotional and the tangible. In one passage, a "faint luminance proclaimed itself directly ahead" [1], setting an eerie tone amidst darkness, while in another, a soft yet pervasive glow illuminates a lofty staircase, hinting at transcendent mystery [2]. The term also captures the delicate interplay between memory and perception, as when a scene’s retrospect "gradually brightened" into a gentle, melancholy glow [3]. Whether describing the ghostly gleam along walls or the effulgence of a joyful moment, "luminance" functions as a versatile metaphor that enriches the narrative by evoking both visual and emotional light [4][5][6][7].