There are still many inspirations from nature, such as: imitating the characteristics of egg shape and building arch bridges; Inspired by the flight of birds, people invented airplanes. I cut off my fingers from the thatch and invented the saw ... There are many animals and plants in nature, which hint at the mysteries of nature in their own unique way of life.
There are many inspirations from nature. There is a kind of snake called rattlesnake. It has an infrared eye. Through the eyes of this snake, human beings have developed a missile with eyes like rattlesnakes. Its name is rattlesnake missile, so it is named rattlesnake missile, because humans are made according to the eyes of rattlesnakes.
Sidewinder missiles, like rattlesnakes, can accurately track the enemy with "hot eyes" until they are destroyed. Because the "hot eye" of the rattlesnake judges the position of the enemy according to its temperature, the rattlesnake missile can accurately hit planes, warships, tanks and the like. 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 armed helicopters to defend the airport. It can also be used against cruise missiles. The missile is 2.94m long, with a diameter of 0. 156m, a weight of 84.5kg, a launcher length of 3.02m, a warhead focused on fragments, a total weight of 13.9kg and a killing radius of 6 ~ 8m m. The power plant is a single-stage solid rocket engine, and the guidance mode is full-range radio command guidance with a combat radius of 500 ~.
Colorful butterflies, such as butterflies with double moon stripes, monarch butterflies with brown veins, especially butterflies with fluorescent wings, have their hind wings that turn from golden to green and from purple to blue in the sun. 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 camouflage at that time, Vanovic, an entomologist in the Soviet Union, suggested that the color of butterflies was not easy to be found in flowers, and military facilities were covered with butterfly-like camouflage. Therefore, although the Germans went all out, the military base in Leningrad remained safe and undisturbed, laying 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 beehive is composed of hexagonal small beehives arranged neatly, and the bottom of each small beehive is composed of three identical diamonds. These structures are exactly the same as those accurately calculated by modern mathematicians-rhombic obtuse angle 109.28' and acute angle 70.32'. They are the most material-saving structures, and they are large in capacity and extremely strong, which makes many experts admire them. People imitate their structures and make honeycomb sandwich panels with various materials. It is not easy to conduct sound and heat, so it is an ideal material for building and manufacturing space shuttles, spaceships and artificial satellites. A polarizer sensitive to the direction of polarized light is arranged adjacent to each monocular of the compound eye of bees, which can be accurately located by using the sun. 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 the vibration of their wings, and wells use the vortex generated by the airflow to lift themselves up. Dragonflies can soar under a small thrust, not only forward, but also backward and left and right. The forward flight speed can reach 72km/ h, and the flight behavior of dragonflies is simple, with only two pairs of wings flapping constantly. Scientists have successfully developed a helicopter based on this structure. When an airplane flies at high speed, it often causes violent vibration, and sometimes even breaks the wing, resulting in the plane crashing. Dragonflies are safe when flying at high speed, so people follow the example of dragonflies and add counterweights to the wings of aircraft to solve the thorny problem of vibration caused by high-speed flight.
Fleas have a high jumping ability, and aviation experts have done a lot of research on it. Inspired by its vertical take-off, a British aircraft manufacturing company has successfully manufactured a harrier aircraft that can take off and land almost vertically. According to the structural characteristics of insect's single compound eye, modern TV technology has made a large-screen color TV, and can also make a small color TV screen into a large picture, and can frame several specific small pictures at any position on the same screen. The same picture and different pictures can be displayed. According to the structural characteristics of insect compound eyes, scientists have successfully developed a multi-aperture optical system device, which is easier to find targets and has been applied in some important weapon systems abroad. According to the mutual inhibition principle of some aquatic insects compound eyes and monocular eyes, an electronic model of lateral inhibition is made and used in various photographic systems. The photos taken can enhance the image edge contrast and highlight the outline. It can also be used to improve the display sensitivity of radar, and can also be used for preprocessing of character and image recognition systems. Based on the processing information of insect compound eye and the principle of directional navigation, the United States developed an engineering model of terminal guidance seeker imitating insect compound eye search. Japan has developed new construction methods of construction machinery and buildings such as hexapod robots by using the morphology and characteristics of insects.
From Seepage Prevention of Yuanmingyuan Lake to "Man can conquer nature"
Recently, Yuanmingyuan spent a lot of money to "lay the bottom of the lake", which was clearly opposed by many environmental experts and environmentalists. The reason of Yuanmingyuan Management Office is to prevent water leakage and save water charges. The main objections of environmental experts are:
First, the anti-seepage project will block the last passage of 100 hectares of rainwater flowing underground, and the ecological environment of 100 hectares of wetland will be destroyed, losing the largest natural wetland in Haidian District, Beijing; Second, Yuanmingyuan Lake is an ecosystem. A large number of underwater microorganisms are silently responsible for inhaling carbon dioxide garbage and fish feces, recreating oxygen organic matter, and letting the clear fish swim happily in the lake. Now covering with plastic sheets will destroy the activities of microorganisms and the whole ecosystem will collapse. In the end, the whole lake turned into a stagnant water, the river stinked in an all-round way, and the dead fish on the river turned over, causing ecological catastrophe; Third, the practice of blocking stone crevices completely destroyed the original natural ecological balance, and the plants on the shore can only rely entirely on artificial watering in the future, which is not conducive to water saving.
Speaking of environmental protection, we immediately think of the opposition between environmental protection and economic development, even if it is temporary. As for the anti-seepage project of Yuanmingyuan Lake, whoever believes that time is fair will have his own views in a few years. According to the latest report, the whole anti-seepage project at the bottom of the lake needs about 30 million yuan, and the annual water fee can be saved by more than10 million, which can be recovered in three years. A seemingly simple economic account. However, the ecological cost is not considered. The ecological cost may not have much to do with Yuanmingyuan itself, but it is related to the surrounding residents, to the ecological environment of the whole region, and to the ecological environment of the whole city, the whole country and even the whole earth. The Amazon rainforest is called the lungs of the earth. If the lungs can't work effectively and normally to maintain the ecological balance of the whole earth, it will have disastrous consequences.
There are so many things that human beings can do that it is not a problem to go to heaven and go to earth. Humans always have the inner impulse to conquer nature, and always think that "man can conquer nature", but most of them are punished by nature. Sanmenxia hydropower station is an extreme example; During the Cultural Revolution, artificial terraces were built all over the country, farmland was reclaimed by water, and forests were destroyed to grow grain. There are countless examples of this violation of the laws of nature. What caused soil erosion and serious ecological imbalance? Humans have to return farmland to forests, plant trees and grass in the desert, maintain the simple balance of nature and seek their own survival.
With the progress and development of human science and technology, there are more and more ways for human beings to influence nature. Precipitation is less than artificial precipitation. Perhaps one day, humans can control the direction of clouds in the sky and move them to places where it needs rain, which is much more convenient and cheaper than the "South-to-North Water Transfer Project" on the ground. If that day really happens, it will pose a greater threat to the survival of mankind.
In fact, man's greatest enemy is himself. In order to produce more eggs, produce more meat and satisfy human appetite, human beings "invented" lean pigs fed with "broilers", "duck stuffing" and "lean meat", and they ate more meat. The edible meat brought to human beings violates the laws of nature and is bound to be punished by them. This punishment may not appear for decades.
In the end, mankind can only be destroyed. Let's be kind to the natural environment, have more reverence for nature and seek harmony and balance. Being kind to nature means being kind to yourself.