2. The number of clouds reaches its peak, and a day is half of Ming Jiang. -Bo Zhang zhen? Yang Wanli (Song)
The first sentence asks, "Why is the sunlight blocked by the mountain peak?" The second sentence asks, "Why do you have to push away the clouds on the mountainside to see the summit, and the sun can only shine into the river through the cracks in the clouds?" In fact, they all use the principle of straight-line propagation of light.
3. Baochai shines brightly and can be distinguished in the mirror. A gift for a woman? Qin Jia (Han)
The first sentence shows that the reflected light after being reflected by jewelry enters people's eyes, which is particularly dazzling; The latter sentence uses the knowledge of plane mirror imaging.
4. Hold Shuiyue in your hand and let the fragrance of flowers permeate your clothes. Jathyapple in Spring Mountain? Yu shiliang
The previous sentence asked, "Why is there a moon in the water?" This phenomenon involves the physical knowledge of plane mirror imaging; The last sentence shows that the molecules that secrete fragrance in flowers move irregularly and have spread.
5. Until, holding up my cup, I asked the bright moon to bring me my shadow and let the three of us. -"Drinking the Bright Moon Alone"? Li Bai (Tang)
The last sentence mainly explains the phenomenon of the moon imaging in the wine glass, which involves the reflection of light. According to the meaning of the poem, the last sentence can be understood from a physical point of view as: people, the shadow under the moon, the people in the glass become three people.
6. The setting sun shines in the peach blossom room, and the willows are all red. -"The intention of the rain window disappearing"? Niu Yingzhi (Qing)
Catkin was originally white, but the main reason why the poem said it was "patches of red" was that sunlight contained seven colors of light. When it passes through a piece of red peach blossom, most of the white light is absorbed by the peach blossom, only the red light is reflected, and the reflected red light shines on the white catkin, naturally showing a faint red color.