Medicine: Utilizing ultraviolet radiation for sterilization, taking X-ray films, and examining patients' injuries. Agriculture: Photosynthesis of plants, exploring the photosensitive characteristics of various plants to different lights, and studying which type of light is suitable for plant photosynthesis. JUN matter: Manufacturing laser weapons with extremely strong penetrating ability. Infrared remote sensing technology allows for tracking. Technology: Ordinary light cannot reach very far. When measuring the distance between celestial bodies, lasers can be used. Lasers can reach the moon. Life: Manufacturing solar cells, silicon photovoltaic cells, addressing the energy crisis. Producing nanomaterials, and other high-tech materials. | 
