光
光 (guāng) is the Chinese word for "light." It refers to the natural agent that stimulates sight and makes things visible. Light travels in waves and can be seen in various forms, such as sunlight, artificial light from bulbs, and even the glow of fireflies.
In physics, 光 is essential for understanding concepts like reflection, refraction, and the electromagnetic spectrum. It plays a crucial role in processes like photosynthesis in plants, where 太阳 (the sun) provides the energy needed for growth. Light also influences our daily lives, affecting mood and visibility.