A poem on the linear propagation of physical light 1. Poetry about physics
First, the peaks reflect the floating mountains, and there is no water, no mountains and no ecstasy. -Guilin landscape in modern Wu Mai.
Physical principles: reflection and refraction of light.
The mountains are stacked in the water, and there is a reflection of the mountains in the water. There is no unattractive mountain, no unattractive water.
Second, Hanshan Temple outside Gusu City, the midnight bell goes to the passenger ship. -Zhang Tang Ji "Sleeping in Fengjiang"
The spread of sound.
In the lonely and quiet Hanshan Temple outside Gusu, the bell rang to the passenger ship in the middle of the night.
Third, the green hills on both sides of the strait are opposite, and the sails are coming alone. -Tang Li Bai's "Looking at Tianmen Mountain"
Physical principle: Castle Peak is static relative to the ground, but with the moving ship as the reference, Castle Peak becomes moving, with the river bank as the reference, and the solitary sail comes from the sun.
The beautiful scenery of the green hills on both sides of the strait is inseparable, and a solitary boat comes from the horizon.
April, April, beautiful scenery on earth, peach blossoms in mountain temples. -Tang Bai Juyi's Peach Blossom in Dalin Temple
Physical principle: The higher the terrain, the slower the temperature rises. In the same season, the temperature on the mountain is lower than that on the mountain.
In April, all the flowers have withered, and the peach blossoms in the ancient temple in the mountains have just bloomed.
Verb (abbreviation of verb) How the water of the Yellow River flows out of heaven and into the ocean, which is gone forever. -Tang Li Bai's "Into the Wine"
Physical principle: water cycle.
The water of the Yellow River fell from the sky, and the waves rolled straight into the East China Sea, never to return.
2. Idioms (15) famous sayings about physical optics can also be used. What phenomenon is written?
China's ancient poems, idioms and proverbs contain rich physical knowledge. Here we * * * know the optical knowledge in ancient poems, idioms and proverbs, so as to deepen our understanding of the phenomenon of light. 1. Light travels in a straight line. 1. Sit in the well and watch the sky: The frog at the bottom of the well sees a small sky, which is caused by the straight-line propagation of light. 2. Real-time analysis: erect a bamboo pole in the sun. It is precisely because the light travels in a straight line that the bamboo pole blocks the light and forms a shadow. 3. One leaf can't see Mount Tai. Analysis: A leaf blocked my eyes and I couldn't even see the tall Mount Tai in front of me. What is used is the knowledge that light travels in a straight line. 4. The trees grow dark in summer, and the balcony reflects the pond. Analysis: the formation of "shadow" in poetry. The "reflection on the balcony" is a virtual image formed by light reflection. How many peaks cover the sun, the river is far away and the sky is high. (From Su Shi's "Traveling to Shan Jiang" in Song Dynasty) Analysis: Why does the phenomenon of "several peaks cover the sun" appear in the linear propagation of light? 6. How many clouds emerge from the summit, but the sun is half of Ming Jiang. (Zhangbo Town by Yang Wanli in Song Dynasty) Sunlight can only illuminate the river through the cracks in the clouds. They all use light to spread along a straight line. Second, the reflection of light is 1. Analysis of the image in the water and the image in the mirror are virtual, so the moon can't be caught in the water and the flowers can't be picked in the mirror. 2. Zhu Bajie looks in the mirror, and there is no one inside or outside. Analysis: According to the imaging law of plane mirror, the image formed by plane mirror is the same as the object. Therefore, Pig Bajie saw the same image as himself, or the image of a pig. Nature is "not a person inside and outside." 3. Jade analysis without cutting tools: Before the jade is polished, the surface is uneven and the light is diffuse. After the jade is polished, the surface is smooth and the light is mirrored. 4. Until, holding up my cup, I asked the moon, which brought me my shadow, and made the three of us (from Li Bai's Drinking the Moon Alone in the Tang Dynasty) analyze: "Until, holding up my cup, I asked the moon" shows that the moon forms a virtual image in the glass, involving flat mirror imaging. 5. Baochai shines brightly and can be distinguished in the mirror. (From Qin Jia's "Giving a Woman" in Han Dynasty) Analysis: "Baochai Shines Brilliantly" shows that the light reflected by jewelry enters people's eyes, which is particularly dazzling; "Mirrors can recognize shapes" makes use of the knowledge of plane mirror imaging. 6. Holding Shui Yue in your hand makes the flowers full of clothes. (From jathyapple in Spring Mountain) Analysis: Why is there a moon in the water? The physical knowledge involved is plane mirror imaging. 7. The moon is thousands of miles away, and the static shadow is heavy (from Fan Zhongyan in the Song Dynasty). "Floating gold" means that the sun is reflected by the water surface, and it seems that the lake is golden; "Still shadows sink to the wall" is a virtual image formed by reflection. 8. How vast the world is, how close the trees are to heaven and how close the moon is to the water! . Analysis: "How close the moon looks in the water!" It means that the moon forms a virtual image in the water, and the author feels very close to the virtual image of the moon. In fact, it is not scientific, because the imaging feature of flat mirror is that the distance from object to mirror is equal, so it is not "close to the people". Third, the refraction of light is 1. Phantom analysis: light refracts through air with uneven density and sees a virtual image. One thing shows spirit. Analysis: A drop of water is equivalent to a convex lens. According to the law of convex lens imaging, you can see the real image of the sun through a drop of water. The desert is lonely and straight, and the long river sets the yen. Analysis: The "sunset" seen by the author is not the actual sun, but a virtual image formed by the refraction of light when it passes through the uneven atmosphere. The actual position of the sun is below the horizon. Lotus knows fish. (From Yu Wan written by Chu Guangxi in the Tang Dynasty) Analysis: "The water in the pool is clear and shallow" means that the water in the pool is crystal clear, which makes people suspect that it is shallow, because when the light enters the air from the water, it refracts, and we see a virtual image of the bottom of the pool. Fourth, the dispersion of light is 1. Sunset returns to Taohuawu, Liuhong. (However, from the poem, it is "patches of red". The reason is that sunlight consists of seven colors: red, orange, yellow, green, blue, indigo and purple. Red peach blossoms reflect red light and absorb other colors. When the catkins pass through a red peach blossom forest, only the red light is reflected, and the reflected red light shines on the white catkins, and the catkins naturally show a faint red color. 2. The peach blossoms on the human face set each other off in red. (Excerpted from Cui Hu's "Tituchengnan Village" in Tang Dynasty) Analysis: We see that the color of an object is determined by the color of its reflected light. Red peach blossoms only reflect red light, and red light is reflected on people's faces. People's faces look red.
3. The poem of light and its physical knowledge.
There is a strong wind in the lunar halo, and the foundation is wet and rainy: when the wind comes, the temperature in the upper air drops rapidly, and the water vapor condenses into small water droplets, which is equivalent to many prisms. The moonlight is scattered through these prisms, forming a colorful halo, so it is called "the halo is windy". The basic nourishment is the ground against the tide. Before the rainstorm, the air humidity is high, the ground temperature is low, and the water vapor near the ground condenses into small water droplets. In addition, the salt contained in the ground is easy to absorb wet water vapor, so the ground is against the tide, which indicates shanghai dawn.
But you can't see people when you listen to the sound: in the process of wave propagation, when the size of obstacles is less than the wavelength, obvious diffraction can generally occur. The height of the fence is several meters, and the wavelength of sound waves is greater than the height of the fence, so you can surround the high wall and make people outside the wall hear it; The wavelength of light wave is shorter (about 10-6 meters), which is much smaller than the size of a high wall, so the light emitted by people cannot be diffracted outside the wall, and people outside the wall can't see people inside the wall.
One day in the cave has been a Millennium: according to Einstein's theory of relativity, sailing in a spaceship near the speed of light will lead to the passage of time much slower than on earth. If you live in this "cave" for a few days, the earth will have passed several years, decades, even hundreds and thousands of years. Sitting in a well and observing the sky, we can see very little: because light travels along a straight line, according to the knowledge of geometric drawing, the frog's field of vision will be very small. Before the jade is polished, the surface is uneven and the light is diffuse. After the jade is polished, the surface is smooth and the light is mirrored.
Before polishing, the jade surface is uneven and the light is diffuse. After polishing, the jade surface is smooth and the light is specular.
The bright moon is in the sky, and the bright moonlight shines on the calm lake. After reflection, it forms a beautiful reflection in the water, similar to flat mirror imaging. Moonlight enters the human eye through reflection, and only in this way can people see the reflection. People close to the water tower are most likely to receive these lights and enjoy the beautiful scenery of this beautiful night, while people far away from the water can't feast their eyes on them naturally, because the reflected light is blocked by pavilions.
Sunbathing flowers and trees in the sun, the surrounding temperature is high. Plants get more light energy from the sun, so they grow rapidly and have deep roots, and they are the first to know the information of spring. However, back-yang plants absorb less light energy, grow slowly, and the pace of spring comes later.
4. For the poems related to sound and light, please list the ancient poems, proverbs and ancient prose above 10.
1. Acoustics: 1, Height: The higher the frequency, the higher the pitch of the sound. Of course, fewer people sing along. 2. With a long whistle, the mountain sound and the valley should be in harmony: this is the sound reflected many times between the valleys. Form a loud echo. 3. Implicit sound: This refers to the sound that really exists outside the human hearing frequency range (such as ultrasound and infrasound) and we can't hear it. 4. You can tell a person by his voice: This is because the timbre of each person's voice is different. 5. Smell the sound, but don't see the person: This is because when the size of the obstacle is smaller than the wavelength, it can be used in the process of sound propagation. Light travels in a straight line in the same substance. Secondly, optically, 1, catching the moon in the water is empty (what you can't catch is the moon in the mirror, what you can't catch is the flowers in the water): because the calm water surface is equivalent to a flat mirror, which forms a virtual image, it is of course futile. Second, the pig doesn't stop looking in the mirror-it's not a person inside and outside: according to the law of plane mirror imaging, things are still like a pig, of course, it's not a person inside and outside. 3. Mirage: When sunlight is reflected into the air, it is refracted due to uneven air density, and you see the virtual image of the distant scenery. 4. A day in a cave has existed in the world for thousands of years: according to Einstein's theory of relativity, sailing in the universe near the speed of light, the passage of time will be much slower than on the earth. In this case, even for thousands of years. Sitting in a well and observing the sky, you can see very little: this is why light travels in a straight line in the same substance. If you don't see that person, smell his voice first: light travels in a straight line.