Animal meteorologists in nature

Animal Meteorologists in Nature Up to now, human beings can't predict the weather very accurately, but there are many living measuring instruments such as barometer, hygrometer and thermometer among animals. These living instruments are very sensitive to all changes in the atmosphere and have been used in real life since ancient times. The general barometer can only perceive the coming of the storm two hours in advance. Although the ship is fast now, it is difficult to avoid the risk easily. In contrast, there are many marine animals and seabirds in the animal kingdom, but they have the ability to observe storms. Based on many observations, bioengineers found that jellyfish is a highly accurate "barometer". Before the storm came, it quickly hid in a safe place. It is found that jellyfish has an "ear" that can sense ultrasonic waves, and its "ear" can clearly hear the ultrasonic waves coming from the water within 10 to 15 hours before the storm. There is a thin rod at the front end of the jellyfish's "ear" and a ball on the rod, which is filled with liquid. There is a small stone floating on it, which is in contact with nerve endings. The ultrasonic wave is first received by the ball filled with liquid, and then transmitted to the nerve by the pebbles in the bubble, so the jellyfish receives the information of strong wind warning. According to the working principle of jellyfish "ears", scientists have made an "electronic ear" device that can automatically forecast gale warning, which can forecast storms more than 10 hours in advance. Besides jellyfish, there were catfish before the storm. Float to the surface. There is a kind of loach that looks like an exhibit in a museum on a sunny day. It stayed motionless at the bottom of the sink, but when it curled up and swam, the sky would soon be overcast. It didn't take long to rain after spinning around in the water. In nature, frogs are called "barometers" because they can sense small changes in the atmosphere. A long time ago, the aborigines in Africa used their characteristics to observe the weather changes. As long as they find the tree frog climbing from the water to the tree, they will start to prepare for rain, because it indicates that the rainy season is coming. When the frog slaps the water on the surface, it means that the weather will be fine. It turns out that frog skin loses moisture easily. When the air is dry, the moisture on the skin will evaporate quickly. Therefore, in the dry spring, frogs often squat in the water. In rainy and humid weather, the water on its skin is not easy to evaporate, so it will jump out of the water. Birds are also excellent weathermen. "Two orioles sing green willows and a row of egrets go up to the sky", which vividly illustrates the relationship between orioles singing and sunny days. Proverbs also have the saying that "the orioles sing and the weather is fine". Bird singing is closely related to weather changes, "singing feels the weather." There is a cloud in the Book of Songs: "The wind and rain are gloomy, and the chickens crow endlessly", which means that it rains from time to time and the chickens crow endlessly. Compendium of Materia Medica records that "the morning warbler (red-billed blue magpie) is called sunny, and the evening warbler is called rain", and the stork says that "when the sky rings, there must be rain". As soon as the cuckoo's song appears, it means that spring is coming and the weather will get warmer. The constant cuckoo's cry in the middle of the night indicates that it will be sunny or hot tomorrow, just like the agricultural proverb "cuckoo crows in the middle of the night and dries the mud tomorrow." Spiders can also predict the weather. /kloc-in the autumn of 0/794, the French army invaded the Netherlands. At that time, the Netherlands could not stop the French troops and artillery, so it had to open the canal gate, flood the road and stop the French army from advancing. Faced with the huge flood, the French army had to prepare to retreat. Just then, the commander of the French army found that spiders unusually doubled their traction and netting, trying to build nests. He immediately ordered to stop retreating and stand by. Because spiders do this only in sunny and cold weather. Sure enough, the temperature plummeted soon, and the Dutch plan to flood the road failed, failing to stop the French attack. Some insects can make long-term weather forecasts. As long as cicadas sing, the temperature has exceeded 24℃. The higher the nest built by ants in autumn, the colder it will be that winter. One sunny day, Newton, a great scientist, went out for a walk and met a shepherd on the way. The kind shepherd said it was going to rain and advised Newton not to go far. Newton looked at the sunny day, didn't believe it would rain, and walked on. It rained heavily in less than 30 minutes. Newton was very surprised by the shepherd's accurate prediction, so he went to consult. The shepherd pointed to the sheep and said that as long as he observed the change of wool, he could predict whether it would rain. In addition, it will rain when goats hide under the eaves, and it will be sunny when they bounce around on the grass. In the long process of evolution, in order to adapt to the changes of the surrounding environment, animals have formed various living organs. These organs seem to be ingenious devices that can accept all kinds of external stimuli, which has aroused great interest from bionics and meteorologists. The invention of some testing instruments often begins with the study of these biological reactions.