Junior high school composition: What I got from my life-

the knowledge I have gained from life. have you ever seen mountains? The mountain is huge. Have you ever seen the sea? The sea is vast. I have always believed that people can understand a lot in nature. Nature contains many philosophies of life. Just like the moon, the full moon and the lack of it represent the reunion and separation of relatives and friends. Ants and aphids show cooperation and mutual assistance for survival. Have you ever seen a bee living alone? They pay attention to the spirit of unity and division of labor.

Nature has also brought me years in a hurry, so I must cherish the enlightenment of time. Look at the sunrise and sunset, as if the sun had just risen, but the stars and the moon were sparse in a blink of an eye. Cordate telosma quietly blooms and fades. If the fallen flowers and leaves once represented the end of a gorgeous life, then it was too short. The brilliance of the bud's birth suddenly turned into a dead dryness! Butterflies will also die in the cold fragrance of flowers in Xia Hou, which is busy in one season.

Life is short, but if we can make it shine, it can be called eternity, isn't it!

Inspiration from Nature

Japanese scientists have been inspired by ants foraging. They have developed a large-scale integrated circuit to simulate the foraging ant Qi Xin working together to carry food, and continuously transmit information from the nearest "food source" to the "ant nest". According to this new information processing method, people are likely to develop a new computing model computer.

There are still many inspirations that human beings can get from nature. Inspired by the flight of birds, the airplane was invented. I cut my finger from the thatch and invented the saw ... There are many animals and plants in nature with their own unique ways of life, which hint at the mysteries of nature.

There are many revelations from nature, among which one kind of snake is called rattlesnake, which has infrared eyes. Through this kind of snake eyes, human beings have developed a missile with rattlesnake-like eyes, and its name is rattlesnake missile. Because human beings are made by imitating the eyes of rattlesnakes, they are named as rattlesnake missiles.

Like rattlesnakes, rattlesnake missiles can accurately track the enemy with "hot eyes" until they are destroyed. Because the "hot eyes" of rattlesnakes judge the enemy's position, aircraft, warships, tanks and other things according to the enemy's temperature. Sidewinder missiles can hit accurately. The mobile low-altitude short-range all-weather ground-to-air missile developed by France is mainly used to deal with low-altitude and ultra-low-altitude fighters and helicopter gunships to defend airports and ports, and can also be used to deal with cruise missiles. The missile is 2.94 meters long, with a diameter of .156 meters, a bomb weight of 84.5 kilograms and a launcher length of 3.2 meters. The warhead adopts fragment focusing type with a total weight of 13.9 kilograms. The killing radius is 6 ~ 8m. The power plant is a single-stage solid rocket engine, and the guidance mode is full-range radio command guidance. The combat radius is 5 ~ 8,5m, and the combat altitude is 5 ~ 3,m. The missile has semi-cross-country maneuverability.

Colorful butterflies, such as Papilio, Papilio fusca, etc., especially Papilio fluorescens, sometimes turn golden in the sun. Sometimes it turns from purple to blue. Scientists have brought great benefits to military defense by studying the color of butterflies. During World War II, the Germans surrounded Leningrad in an attempt to destroy its military targets and other defense facilities with bombers. According to people's lack of understanding of camouflage at that time, the Soviet entomologist Schwarzenegger proposed that the color of butterflies could not be easily found among flowers, and covered military facilities with butterfly-like camouflage. Therefore, Although the Germans tried their best, the military base in Leningrad was still safe, which laid a solid foundation for winning the final victory. According to the same principle, people later produced camouflage uniforms, which greatly reduced the casualties in the battle.

The beehives were composed of neatly arranged hexagonal small beehives, and the bottom of each small beehive was composed of three identical diamonds, which were accurately calculated by modern mathematicians-rhombic obtuse angle of 19.28. The acute angle of 7.32' is exactly the same, and it is the most material-saving structure, and it has a large capacity and is extremely strong, which makes many experts admire it. People imitate its structure and make honeycomb sandwich structural plates with various materials, which are strong, light and difficult to conduct sound and heat, and are ideal materials for building and manufacturing space shuttles, spaceships, artificial satellites, etc. Polarizers sensitive to the direction of polarized light are arranged adjacent to each single eye of the compound eye of bees. Based on this principle, scientists have successfully developed a polarized light navigator, which has been widely used in navigation.

Dragonflies can generate local unstable airflow different from the surrounding atmosphere through wing vibration, and the well uses the vortex generated by the airflow to lift itself up. Dragonflies can soar under a small thrust, not only flying forward, but also flying backward and left and right, and its forward flight speed can reach 72km/ hour. The flight behavior of dragonflies is simple, and only two pairs of wings keep flapping. Scientists have successfully developed helicopters based on this structural foundation. When flying at high speed, airplanes often cause severe vibration, and sometimes even break wings, causing plane crashes. Dragonflies are safe and sound when flying at high speed, so people follow the example of dragonflies and add balance weights to the wings of the aircraft. It solves the thorny problem of vibration caused by high-speed flight.

The jumping ability of fleas is very high, and aviation experts have done a lot of research on it. A British aircraft manufacturing company was inspired by its vertical take-off mode and successfully manufactured a harrier aircraft that can almost take off and land vertically. Modern television technology has made a large-screen color TV according to the structural characteristics of insects' single compound eyes, and can also make a small color TV screen into a big picture. And a few specific small pictures can be framed at any position on the same screen, which can not only show the same picture, but also show different pictures. According to the structural characteristics of insect compound eyes, scientists have successfully developed a multi-aperture optical system device, which is easier to search for the target and has been applied in some important foreign weapon systems. According to the principle of mutual inhibition between monocular eyes that make up compound eyes in some aquatic insects, the lateral inhibition electronic model is made and used in various photographic systems. Photographs taken can enhance the edge contrast and highlight the outline of the image, and can also be used to improve the display sensitivity of radar, and can also be used for the pretreatment of text and picture recognition systems. Using the processing information of insect compound eyes and the principle of directional navigation, the United States has developed an engineering model of terminal guidance seeker with great practical value. Japan has developed new construction methods of engineering machines and buildings such as hexapod robots by using insect morphology and characteristics.