The word "luminous" in literature conveys both the tangible quality of light and a metaphorical sense of inner brilliance. In scientific discourses and explorations of the natural world, it is used to describe precise, measurable glows—from the detailed brightness of physical phenomena like radiant rings and ceilings [1][2][3] to the ethereal play of light on atmospheric conditions [4][5]. At the same time, authors extend its use beyond the literal to evoke emotional intensity, as when a character’s eyes or smile are depicted as “luminous,” suggesting an inner light imbued with feeling and character [6][7]. Moreover, the word can also elevate the narrative tone by imbuing settings or events with a transcendent quality, such as comparing love or the dawning of hope to a luminous burst that dispels darkness [8][9].