The story of Lu Ban inventing the saw has been circulated among the people for thousands of years. Legend has it that one year, Luban accepted the task of building a huge palace. The palace needed a lot of wood, so Lu Ban sent his disciples up the mountain to cut down trees. Since there was no saw at that time, his disciples had to use axes to cut, but the efficiency was very low. The craftsmen had to work hard every morning. I'm exhausted. I can't cut down many trees, which is far from meeting the needs of the project. The progress of the project has been delayed again and again. Seeing that the project deadline is getting closer and closer, I am anxious for Luban. To this end, he decided to personally go up the mountain to see the situation of cutting trees. When going up the mountain, he accidentally caught a handful of weeds growing on the mountain, but suddenly cut his hand. Lu Ban wants to know why a grass is so sharp. So he picked a leaf and observed it carefully. He found many small teeth on both sides of the leaf. These little teeth are very sharp when he touches it gently. He knew that his hand had been cut by these small teeth. Later, Lu Ban saw a big locust eating leaves in a meadow. The two large molds are very sharp. As soon as they opened and closed, they quickly ate a big piece. This also aroused Lu Ban's curiosity. He caught a locust and carefully observed the structure of its teeth. He found that locusts also had many small teeth on their two big dies, which were used by locusts to bite grass leaves. These two things left a deep impression on Lu Ban, and also gave him great inspiration. He fell into deep thinking. He thought, if the tool for cutting wood is serrated, isn't it sharp? It will be much easier to cut down trees. So he made a bamboo with many small serrations from a big bamboo, and then went to a small tree to do experiments. The result is really good. After a few quick tugs, the bark was torn, and after a few more tugs, a deep ditch was made in the small tree stem. Luban is very happy. However, bamboo can not be used for a long time because of its softness and poor strength. After pulling for a while, some small serrations are broken and some are dull, so it is necessary to replace bamboo. This affects the speed of cutting down trees, and it is also a great waste to use too many bamboo chips. It seems that bamboo is not suitable for making sawtooth, so we should find a material with higher strength and hardness to replace it. At this time, Lu Ban thought of the iron sheet. So they immediately went down the mountain, and the blacksmith helped to make small serrated iron pieces, and then went up the mountain to continue their practice. Lu Ban and his apprentice each pulled one end and pulled it up on a tree. I saw them coming and going, and soon I sawed off the tree, which was quick and labor-saving, and the saw was invented.
Before Luban, many people would encounter similar situations in which their hands were cut by weeds. Why only Luban was inspired by it and invented the saw is undoubtedly worthy of our consideration. Most people just think that this is a trivial matter in life and it is not worth making a fuss about. After the wound heals, they tend to forget it. However, Lu Ban has strong curiosity and correct ideas. He paid great attention to observing, thinking and delving into some small things in life, from which he found ways and ideas to solve problems and even obtained some creative inventions. This tells us a truth. Paying attention to many trivial things in life and thinking seriously will increase a lot of wisdom.
Cactus, ants, these natural things can be seen everywhere, so it is not unusual, but don't underestimate them.
Have you ever seen a group of tiny ants crawling on the wall, always carrying food as small as sand and walking around in groups? That tiny figure is very fragile. As long as it is crushed, its life may end like this. Although ants are small, they are very United. When an ant finds food, it is too big to carry it by itself, so it immediately returns to its nest and informs its partners that everyone can unite. If we can cooperate, we can stand firm in life.
Cactus live in desert areas, where the heat is unbearable and there are many ferocious beasts, and the situation is very dangerous. However, the cactus has lived there for a long time, but it has not become extinct. This is because it grows sharp thorns to adapt to dangerous environment, which makes animals helpless. This seems to tell us that we must overcome difficulties and rely on our strong perseverance to solve the external difficult environment. As the saying goes, "Nothing is difficult in the world, only if you put your mind to it."
In nature, it inspires us too much. As long as we understand them with our heart, we can have a deeper understanding of life. Aren't cactus and ants good examples?
Enlightenment of nature to human beings
Nature is beautiful, so we should protect it. We shouldn't throw rubbish, spit and cut down trees. Then, I will tell you a story.
Once upon a time, there was a village. He doesn't like to protect nature, so he cuts down trees and makes them into chairs and tables. Soon, everyone in the village felt that the house was old and should be replaced. People went to chop wood to build houses, and the houses were finished. People in the village there cried happily. Some people were very proud. Their houses were more beautiful than others. In this way, people cut down trees every day.
Soon the flood came and the village was completely destroyed by the flood. Even the most beautiful houses were washed away by the fierce flood, because some houses were washed away because of countless obstacles, and this place became a wasteland. This story is for everyone not to pick up the land indiscriminately.
Nature is so good, why would anyone want to destroy it? Let me talk! Because some people have nowhere to throw, they can't throw them underground. Some people think it's just a waste of garbage and no tutor. In our class, some people don't eat apples, but also draw pictures on them. Some people chew and spit on the ground, which makes life on duty very troublesome. In such a good environment, they learned to listen. The small bones of ants help us unite, while bees collect honey and teach us to work hard. Do you think nature is so beautiful that you are willing to destroy it?
Peter parker, the hero of the American blockbuster "Spider-Man", flies over the eaves and climbs the wall, relying on the power of spider silk. Theoretically, a pencil-thick spider tow can hook a jet plane landing on an aircraft carrier, and it is as elastic as nylon. The natural force of this natural product constantly inspires human beings. People not only imitate birds to design airplanes, but also imitate plants to invent velcro. They also want goats to secrete spider silk in their milk.
Engineers always get inspiration from nature. Leonardo da vinci wrote in the16th century: "Human spirituality will create all kinds of inventions, but it will not make these inventions better, simpler and clearer; Because natural products are just right. "However, the exemplary achievement of bionics is not only the imitation of nature, but the result of trying to explore the principles and mechanisms behind natural systems and then applying them concretely. In fact, simply copying biological tissues will lead to mediocre and terrible engineering design.
Think about all kinds of failed ideas of human beings making airplanes. The Bai brothers successfully crossed this difficulty. They did not simply imitate the posture of birds, but examined the delicate state of their wings when they took off and landed and glided, and then transplanted them to planes with fixed wings.
There are many famous examples of applied bionics in the history of invention. Most vividly, in the 1940s, Swiss engineer George Mestraw got inspiration from Xanthium plants that touched his pants and dog ears and invented velcro. More recently, in 1995, Intel Freescale, one of the largest carpet companies in the world, produced a carpet that imitated the surface of woodland. Also, the lobster with sensitive sense of smell provides people with the idea of making odor detectors; A parasitic fly, with a keen hearing organ like a microphone, has contributed a lot to the design of better hearing AIDS. And geckos and lizards. Geckos rely on the molecular attraction of beards on their toes to attract walls and ceilings. The combined force of hundreds of millions of molecular suction on gecko feet can theoretically bear 60 pounds, which provides an encouraging prospect for manufacturing reusable adhesive tape.
A similar example is that the colloid produced by mussel with its protein is so strong that it can stick itself to rocks even in cold seawater. This colloid can be used in all fields from surgical suture to ship maintenance. Recently, a bionic product "Letsey" has a silica gel coating, which also draws lessons from the self-cleaning function of Lotus. The German manufacturer of this paint claims that only a brush and a bucket of water are needed to remove the dirt from this household paint.
Jenin Benas, a popular science writer, wrote in the book Bionics in 1997: "Unlike the industrial revolution, the bionic revolution brought us not an era when we dug from nature, but an era when we learned from nature."
In this world, perhaps nothing is more elegant and efficient than silk in a spider's web. In the office of Wyoming State University, molecular biologist Langdon Lewis showed a computer anatomical map of a golden web spider. Six independent filament glands in the abdomen of spiders secrete different protein solutions or mucus. They produce six kinds of silk through the power of spider spinneret: one is to wrap eggs, the other is to ensure hunting safety, the third is to weave webs, and the most elastic one is traction silk, which spiders use to weave webs or walk. Traction silk is the toughest silk that animals can make. Theoretically, a pencil-thick spider tow can hook a jet plane landing on an aircraft carrier, and its elasticity is the same as that of nylon. The toughness and elasticity of spider silk are five times that of bulletproof vest fiber B.
Spider silk is so magical, but it is not easy to produce. Everyone wants to keep spiders, but no one can do anything, because spiders put together will eventually eat each other. In a farm building outside Montreal, USA, Jeffrey Turner, a molecular biologist and president and CEO of Nicosia Biotechnology Company, is trying new methods.
Things have to start from the beginning. 1998, Turner learned that Lewis and others had isolated the gene of this spider. Noting that researchers have produced drugs through goat's secretory system, he can't help wondering why goats can't make spider silk in their milk. After all, the silk glands of spiders are very similar to the milk glands of goats. "So I called Langdon and asked him to help me study the spider silk gene," Turner recalled.
Technicians in Nicosia first extracted hundreds of fertilized eggs from dozens of goats, then implanted spider silk gene into fertilized eggs, and then implanted these fertilized eggs into goats again. This summer, these fertilized ewes became mothers, and Nigerian technicians were able to extract their milk (this stage is like maple syrup). However, so far, Nekosia has not done anything revolutionary. "Simulating how spiders spin silk is the most difficult thing," Turner said. In its spinneret, the spider somehow turns mucus into a constantly pulling filament-it is neither wet nor brittle, but it is quite tough and elastic.
Nekosia and its research partner, experts from the US Army Biochemical Command, are trying to put spider mucus into a syringe-like container and extrude braided filaments. In a recent experiment, many properties of the silk made by the company were almost the same as those of natural spider silk, but the company admitted that its strength was only 30% of that of natural silk. Of course, Turner is still optimistic about this. He thinks this kind of silk can become stronger, and he intends to apply for a patent for this experiment in the next few years.
There is more than one way to climb the railing, and so is the simulated spider silk. David Kaplan, a professor of student engineering at Taft University, has been studying biological filaments for many years, and he has high hopes for the application prospect of tow. He said that although silk is not as tough as spider silk, it can be used in the field of medical devices relatively quickly and can also be obtained on a large scale.
In his laboratory, Kaplan showed a large shallow metal box called a winding reel, which looks like the internal organs of a grand piano and contains more than a dozen small motors. Four-foot-long fibers are stretched on motors at both ends of the reel, and each bundle of fibers consists of 10 filaments. The computer controls each motor to twist the fibers at different revolutions per inch, so that each bundle of fibers obtains different strength and elasticity. "If you bind and twist it in a proper way, you can get all kinds of attributes you want," Kaplan said.
He believes that human tissues will grow around these fibers and produce new ligaments. He is now focusing on the research of artificial replacement of anterior cruciate ligament, and the knee joint tissue has always been a difficult problem for athletes. "In theory, silk should be used for any tendon and ligament, but also for other tissues," he said. Estimate? The experiment of smokers will be carried out in the next two or three years.
Society may accept genetic engineering or abandon it because it is too dangerous. However, nature will still inspire designers, scientists and other innovators. These lively and lovely little goats in the experimental corral of Nicosia Company may one day produce some rare materials for making bulletproof vests. Bionics seems to have a bright future.
The inspiration of human inventions-animals, boats and submarines comes from people's imitation of fish and dolphins. Scientists have made the first batch of gas masks in the world according to the unique drug detection ability of wild boar nose. The rocket takes off by using the recoil principle of jellyfish and squid. Researchers have developed many military camouflage equipment for the army by studying the chameleon's color-changing ability. Scientists studied frog eyes and invented electronic frog eyes. The US Air Force has developed a miniature thermal sensor through the "hot eye" function of poisonous snakes. Humans also used the principle of leapfrog to design a toad ram (hang). Humans imitate the highly sensitive sense of smell of police dogs and create "electronic police dogs" for investigation.
Bionic and high-tech modern radar, a radio positioning and ranging device: scientists found that bat monsters rely not on eyes, but on an echo positioning system consisting of mouth, throat and ears. Because bat magic emits ultrasonic waves when flying, it can also detect the ultrasonic waves reflected by obstacles. Based on this, scientists have designed a modern radar-a radio positioning and ranging device ... Scientists have invented an artificial dolphin skin that can improve the speed of torpedoes by studying the tiny swimming resistance of dolphins; And a wheeled vehicle (jumping machine) that imitates kangaroo's movement in the desert.
Inspired by King Penguin, scientists from the Institute of Zoology of the former Soviet Academy of Sciences designed a new type of car-"King Penguin" brand polar off-road vehicle. The wide bottom of this car is directly attached to the snow surface and supported by a wheel spoon, and the driving speed can reach 50 km/h.
Scientists make space robots by imitating insects.
A research team of Australian National University has developed a small navigation and flight control device by studying several insects. This device can be used to equip a small aircraft for Mars exploration.
Inspired by bionics, British scientists are developing a new submarine, which can swim in an S shape by swinging its tail fin. The main innovation is the use of a device called "trunk actuator". "Elephant trunk" consists of a group of thin and soft hoses, which imitate muscle activity and promote fin movement. This new submarine can be used as an underwater mine-clearing submarine to deal with mines that will detonate at the slightest sound or interference.
butterfly
Colorful butterflies, such as butterflies with double moon patterns, monarch butterflies with brown veins, especially butterflies with fluorescent wings, suddenly turn into gold, green and 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. Schwarzenegger, an entomologist in the Soviet Union, put forward the principle that the color of butterflies is not easy to be found in flowers, and covered military facilities with butterfly-like camouflage. Therefore, despite the German efforts, the military base in Leningrad remained intact, 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 constant change of satellite position in space will cause a sudden change of temperature, sometimes the temperature difference can be as high as two or three hundred degrees, which seriously affects the normal work of many instruments. Inspired by the fact that scales on butterflies automatically change their angles with the direction of sunlight to adjust their body temperature, scientists have made the satellite's temperature control system into a louver style, which has different radiation and heat dissipation capabilities. A temperature-sensitive metal wire is installed at the rotating position of each window, which can adjust the opening and closing of the window with the change of temperature, thus keeping the internal temperature of the satellite constant and solving a major problem in the aerospace industry.
beetle
When the beetle defends itself, it can spray a smelly high-temperature liquid "shell" to confuse, stimulate and scare the enemy. After dissection, scientists found that there are three chambers in the beetle body, which store dihydric phenol solution, hydrogen peroxide and biological enzyme respectively. Diphenol and hydrogen peroxide flow into the third chamber and mix with biological enzyme to have a chemical reaction, which instantly becomes venom at 100℃ and is quickly ejected. This principle has been applied to military technology at present. During World War II, the German Nazis made a new engine with huge power and safe and reliable performance according to this mechanism, which was installed on cruise missiles, making it fly faster, safer and more stable, and improving the hit rate. London, England suffered heavy losses when it was bombed. American military experts have developed advanced binary weapons inspired by the principle of beetle spraying. This weapon contains two or more chemicals that can produce toxins in two separate containers. After the projectile was launched, the diaphragm broke, and the two poison intermediates mixed and reacted within 8- 10 seconds of the projectile's flight, producing deadly venom at the moment when it reached the target and killed the enemy. They are easy to produce, store and transport, safe and not easy to fail. Fireflies can directly convert chemical energy into light energy, and the conversion efficiency reaches 100%, while the luminous efficiency of ordinary electric lamps is only 6%. The cold light source made by people imitating the luminous principle of fireflies can improve luminous efficiency by more than ten times and save energy greatly. In addition, an air-to-ground speedometer based on beetle apparent motion response mechanism has been successfully applied to aviation.
dragonfly
Dragonflies can generate local unstable airflow different from the surrounding atmosphere through the vibration of their wings, and use the vortex generated by the airflow to make themselves rise. Dragonflies can soar under a small thrust, not only forward, but also backward and left and right, and its forward flight speed can reach 72 km/h. In addition, the flight behavior of dragonflies is simple, with only two pairs of wings flapping constantly. Scientists have successfully developed a helicopter based on this structural foundation. When an airplane flies at high speed, it often causes violent vibration, and sometimes even breaks its wings, causing the airplane to crash. Dragonflies are safe when flying at high speed, so people follow the example of dragonflies and add weights to the two wings of the plane to solve the thorny problem of vibration caused by high-speed flight.
In order to study the aerodynamics and flight efficiency of gliding flight and collision, a mobile wing (wing) model with four-blade drive and remote horizontal control was developed, and the flight parameters were tested in the wind tunnel for the first time.
The second model tries to install a wing flying at a faster frequency, reaching the speed of 18 vibrations per second. What is different is that this model adopts a device that can variably adjust the phase difference between the front and rear wings.
The central and long-term goal of this research is to study the performance of aircraft driven by "wing" and compare it with the efficiency of aircraft driven by traditional propeller.
fly
The special feature of housefly is its fast flying technology, which makes it difficult to be caught by humans. Even behind it, it is difficult to get close to it. It imagines every situation, is very careful and can move quickly. So, how did it do it?
Entomologists found that the back wings of flies degenerated into a pair of balance bars. When it flies, the balance bar vibrates mechanically at a certain frequency, which can adjust the movement direction of its wings. It is a navigator to keep the balance of flies. Based on this principle, scientists have developed a new generation of navigator-vibrating gyroscope, which greatly improves the flight performance of the aircraft, enables the aircraft to automatically stop the dangerous rollover flight, and automatically restore the balance when the body is strongly inclined, even when the aircraft is in the most complicated sharp turn. The fly's compound eye contains 4000 single eyes that can be imaged independently, and the object can be seen clearly in 360 degrees. Inspired by the fly's eye, people made a fly's eye camera consisting of 1329 small lenses, which can take 1329 high-resolution photos at one time. It is widely used in military, medical, aviation and aerospace fields. Flies have a particularly sensitive sense of smell and can quickly analyze dozens of smells and respond immediately. According to the structure of flies' olfactory organs, scientists have converted various chemical reactions into electric pulses, and made a very sensitive small gas analyzer, which is widely used in spacecraft, submarines, mines and other gas components, making the safety factor of scientific research and production more accurate and reliable.
bee
Beehives are composed of hexagonal small hives arranged neatly, and the bottom of each small hive is composed of three identical diamonds. These structures are exactly the same as those accurately calculated by modern mathematicians-rhombic obtuse angle 109 028' and acute angle 70032'. They are the most material-saving structures, and they are very large and strong, which surprised many experts. People imitate its structure and make honeycomb sandwich structural plates with various materials. This structural plate has high strength, light weight and is not easy to conduct sound and heat. They are ideal materials for making space shuttles, spaceships and artificial satellites. Polarizers sensitive to the direction of polarized light are arranged adjacent to each eye of the compound eye of bees, which can be accurately positioned by the sun. Based on this principle, scientists have successfully developed polarized light navigator, which is widely used in navigation.
Flies, fireflies, electric fish, jellyfish, see below.
Fifth: octopus sucker ~
Bionics is a science that imitates the special skills of biology and develops machinery or various new technologies by using the structure and function principles of biology. According to legend, Lu Ban, a famous craftsman in ancient China, cut his hand when he went up the mountain to cut down trees. He wants to know how a grass can be so powerful. After careful observation, he found that there were many sharp teeth on the leaf edge of silk grass. So Lu Ban invented the woodworking saw. It is speculated that the invention of ancient wooden boats was inspired by the swimming of fish. In the process of inventing airplanes, people also learned a lot of useful knowledge from the flight of insects and birds.
Now, scientists are looking for inspiration and answers in the biological world with many scientific problems such as orientation, navigation, exploration, energy conversion, information processing, biosynthesis, structural mechanics, fluid mechanics and so on.
Flies and spaceships
Nasty flies seem to have nothing to do with the grand space cause, but bionics closely connects them.
Flies are notorious "smelly things". They can be seen everywhere and have a bad smell. Flies have a particularly sensitive sense of smell, and can smell the smell thousands of meters away. But flies don't have noses. What does it rely on to act as a sense of smell? It turns out that the "nose" of flies-olfactory receptors are distributed on a pair of antennae on the head.
Each "nose" has only one "nostril" communicating with the outside world, which contains hundreds of olfactory nerve cells. If the smell enters the nostrils, these nerves will immediately convert the smell stimulus into nerve electrical impulses and send them to the brain. The brain can distinguish substances with different smells according to different nerve electrical impulses generated by substances with different smells. Therefore, the fly's antenna is like a sensitive gas analyzer.
Inspired by this, bionics successfully imitated a very strange small gas analyzer according to the structure and function of the olfactory organs of flies. The probe of this instrument is not metal, but a live fly. A very fine microelectrode is inserted into the olfactory nerve of the fly, and the guided neuroelectric signal is amplified by an electronic circuit and sent to an analyzer; The analyzer can give an alarm as soon as it finds the signal of odorous substances. This instrument has been installed in the cockpit of the spacecraft to detect the composition of the gas in the cabin.
This small gas analyzer can also measure harmful gases in submarines and mines. This principle can also be used to improve the input device of computer and the structural principle of gas chromatography analyzer.
From Fireflies to Artificial Luminescence
Since the invention of electric light, life has become more convenient and rich. But electric lamps can only convert a small part of electric energy into visible light, and most of the rest is wasted in the form of heat energy. The heat rays of electric lamps are harmful to people's eyes. So, is there a light source that only emits light without heating? Humans have turned their attention to nature again.
In nature, many creatures can emit light, such as bacteria, fungi, worms, mollusks, crustaceans, insects and fish, and the light emitted by these animals does not produce heat, so it is also called "cold light".
Fireflies are one of many luminous animals. There are about 65,438+0,500 species of fireflies. Their luminescent colors are yellow-green, orange, and their brightness is different. Fireflies emit cold light, which not only has high luminous efficiency, but also is generally soft, suitable for human eyes, and the light intensity is relatively high. Therefore, bioluminescence is an ideal light source for human beings.
Scientists found that the luminous device of fireflies is located in the abdomen. This light emitter consists of three parts: light emitting layer, transparent layer and reflecting layer. There are thousands of luminescent cells in the luminescent layer, all of which contain fluorescein and luciferase. Under the action of luciferase, fluorescein combines with oxidation to emit fluorescence with the participation of intracellular water. The luminescence of fireflies is essentially a process in which chemical energy is converted into light energy.
As early as the 1940s, people created fluorescent lamps on the basis of the study of fireflies, which greatly changed the lighting sources of human beings. In recent years, scientists first isolated pure fluorescein from fireflies, then isolated luciferase, and then synthesized fluorescein artificially by chemical methods. Biological light source composed of fluorescein, luciferase, ATP (adenosine triphosphate) and water can be used as a flash lamp in mines filled with explosive gas. Because this lamp has no power supply and does not produce magnetic field, it can be used to clear magnetic mines under the irradiation of biological light source.
Now, people can get cold light similar to biological light by mixing some chemicals for safe lighting.
Electric fish and volt battery
Many creatures in nature can generate electricity, and there are more than 500 kinds of fish alone. People call these discharging fish "electric fish".
All kinds of electric fish have different discharge skills. Electric ray, electric catfish and electric eel have the strongest discharge ability. Medium-sized torpedoes can generate about 70 volts, while African torpedoes can generate up to 220 volts; African electric catfish can generate 350 volts; Electric eels can generate 500 volts. There is a South American electric eel that can generate up to 880 volts, and it is called the champion of electric shock. It is said that it can kill big animals like horses.
Where is the mystery of electric fish discharge? Through the anatomical study of the electric fish, it is finally found that there is a strange power generation organ in the electric fish. These generators are made up of many translucent disk-shaped batteries, called electric plates or plates. Due to the different types of electric fish, the shape, position and quantity of the electric plates of the generator are also different. The generator of electric eel is prismatic and located in the muscles on both sides of the caudate spine. The torpedo generator is shaped like a flat kidney, arranged on both sides of the body midline, with 2 million electric plates. The generator of electric catfish originated from some kind of gland, located between skin and muscle, with about 5 million electric plates. The voltage generated by a single plate is very weak, but because there are many plates, the voltage generated is very large.
The extraordinary skills of electric fish have aroused great interest. /kloc-at the beginning of 0/9th century, Italian physicist Volt designed the world's earliest voltaic battery based on electric fish power generation organ. Because this kind of battery is designed according to the natural generator of electric fish, the research of electric fish called "artificial electric officer" also gives people such enlightenment: if the power generation organ of electric fish can be successfully imitated, then the power problem of ships and submarines can be solved well.
Jellyfish windward ears
"Swallows fly low before the rain, cicadas sing, and the sky clears up in the rain." Biological behavior is related to the change of weather. Fishermen along the coast know that fish and jellyfish living along the coast swim to the sea in batches, which indicates that a storm is coming.
Jellyfish, also known as jellyfish, is an ancient coelenterate that floated in the ocean as early as 500 million years ago. This lower animal has the instinct to predict storms, and every time before the storm warning, it will swim to the sea to take refuge.
It turns out that in the blue ocean, infrasound (frequency is 8- 13 times per second) generated by the friction between air and waves is always a prelude to storm warning. This infrasound is inaudible to the human ear, but the little jellyfish is very sensitive. Bionics found that there is a thin handle in the ear cavity of jellyfish, a small ball on the handle, and a small auditory stone in the ball. When the infrasound before the storm hit the auditory stone in the jellyfish's ear, the auditory stone stimulated the nerve receptors on the ball wall, so the jellyfish heard the rumble of the coming storm.
Bionics imitates the structure and function of jellyfish ears, designs a storm predictor for jellyfish ears, and accurately simulates the organs that jellyfish feel infrasound. This instrument is installed on the front deck of the ship. When it receives the infrasound wave of the storm, it can automatically stop the horn rotating 360 degrees, and the direction it refers to is the direction of the storm. The reading on the indicator can show the intensity of the storm. This forecaster can forecast storms 15 hours in advance, which is of great significance to navigation and fishery safety. The turtle on the back-the tank turned to the turret
Nature is the teacher of mankind.