Nature Revelation Essay 500, Nature Revelation Essay

Dragonfly Dragonflies vibrate with their wings to create locally unstable air currents that are different from the surrounding atmosphere, and use the vortices created by the air currents to raise themselves. Dragonflies can soar with very little thrust and can fly not only forward, but also backward and left and right, and can fly forward at speeds of up to 72 km/h. In addition, dragonflies have a simple flight behavior, relying on only two pairs of wings to flap constantly.

Scientists have successfully developed a helicopter based on this structural basis. When flying at high speed, the aircraft often causes violent vibrations, and sometimes even breaks the wings and causes plane crashes. Dragonflies rely on weighted wings to fly at high speeds, so people imitate dragonflies by adding counterweights to the wings of the aircraft to solve the thorny problem of vibrations caused by high-speed flight.

In order to study the aerodynamics of gliding flights and collisions and the efficiency of their flight, a four-bladed, remote-level-controlled model of the locomotive wing (wing) was developed and, for the first time, flight parameters were tested in a wind tunnel.

The second model tried to install a wing that flew at a faster frequency, reaching a speed of 18 vibrations per second. Characteristically, this model uses a device that variably adjusts the difference between the front and rear pairs of wings.

The central and long-term goal of the research is to study the performance of aircraft driven by "wings" and the efficiency of aircraft compared to conventional propeller-driven aircraft.

Flies What makes houseflies special is its fast flying technique, which makes it very difficult for humans to catch. It is difficult to approach it even behind it. It envisions every situation, is very careful, and can move quickly. So, how does it do it?

Entomologists have found that the hindwings of flies degenerate into a pair of balancing rods. When it flies, the balance rod vibrates mechanically at a certain frequency, which can adjust the direction of movement of the wings, and is a navigator to keep the fly's body balanced. According to this principle, scientists have developed a new generation of navigator - vibrating gyroscope, which greatly improves the flight performance of the aircraft, can make the aircraft automatically stop dangerous rolling flight, and can automatically restore balance when the body is strongly tilted, even when the aircraft is in the most complex sharp turns.

The fly's compound eye contains 4,000 single eyes that can be imaged independently, allowing them to see objects in an almost 360-degree range. Under the inspiration of the fly's eye, people made a fly's eye camera composed of 1329 small lenses that can take 1329 high-resolution photos at a time, which is widely used in military, medicine, aviation and aerospace. Flies have a particularly sensitive sense of smell and can quickly analyze dozens of odors and react immediately.

According to the structure of the fly olfactory organ, scientists have converted various chemical reactions into electrical pulses to make a very sensitive small gas analyzer, which has been widely used in spaceships, submarines and mines to detect gas composition, so that the safety factor of scientific research and production is more accurate and reliable.

Nature has given us a lot of inspiration, among which there is a snake called a rattlesnake, its tongue can judge where the animal is according to the heat, human beings through this snake, developed a missile with a rattlesnake tongue, its name is rattlesnake missile, because human beings are modeled after the rattlesnake eye, so it is named rattlesnake missile.

Sidewinder missiles can be used in the same way as Sidewinders"Hot eyes"Track your enemies with unerring accuracy until they are destroyed. Because of the rattlesnake's"Hot eyes"It is to judge the enemy's position according to the enemy's temperature, aircraft, battleships, tanks, etc., and these things can be accurately hit by Sidewinder missiles. A mobile low-altitude short-range all-weather surface-to-air missile developed by France.

It is mainly used against low-altitude, ultra-low-altitude fighters, armed with *** to defend airfields, port points, and can also be used against cruise missiles. The length of the missile is meters, the diameter of the missile is meters, the weight of the projectile is kilograms, and the length of the launch canister is meters. The warhead is of the fragmentation focused type, with a total weight of kilograms, and a radius of destruction of 6 8 meters.

The power plant is a single-stage solid rocket engine, the guidance mode is full radio command guidance, the combat radius is 500 8500 meters, and the combat altitude is 50 3000 meters. The missile has semi-cross-country maneuverability.

There are many mysteries in nature, and today I discovered a small "secret", that is: I discovered why the ants moved and it would rain heavily tomorrow.

In the past, I was curious about this question. When I was seven years old, one day, when I was playing on the grass in the suburbs, I noticed a large group of small ants walking in a long line towards a small hole, and each of them had something like little sand on its body, and I thought to myself: What are these little sand grains?

My mind was full of question marks, and I went to my father out of curiosity and asked, "Dad, why do the little ants walk in a long line to the entrance of the small hole?" Every little ant has something like a grain of sand on its body?

Later, my father told me: "That's because every time the little ants encounter a stuffy situation, they will tell the "ant colony", and when the ant colony learns about this situation, they will move immediately, and the weather is hot and humid, and it will rain heavily the next day, and the little ants will find a small hole to shelter from the wind and rain, and they will move because their previous house will be damp, so they have to move." The little grains of sand on the little ants are the food of the little ants.

Oh! That's when I realized! I have one more small question, and that is:

Why can ants rain until the next day? Dad said, "Ants are the same as us humans, they also feel stuffy, so when ants feel stuffy, it will rain the next day."

I learned another truth. I also heard my dad say, "If people see ants moving, it will rain heavily tomorrow."

This also confirms the proverb, that is: ants move snake aisles, and there will be heavy rain tomorrow! "I know it's going to rain heavily tomorrow, so I wonder why it's so magical.

I remembered another sentence: I don't know what absolute truth is, but I am humble about my ignorance. I didn't know that little ants could help people so much, and I believed in another saying, and that is:

When they awakened, they said to me, "You and the world you live in are nothing but a grain of sand on the boundless shore of the boundless ocean. "In a dream I said to them:

I am the boundless ocean, and the world is but a grain of sand on my sandy shore. I also want to tell the ants, "You are not the youngest.

Nature is our inspiration and the teacher of humanity, and it brings people ingenuity and imagination.

[Nature's Revelation].

Nature has a lot to teach us, and today I'm going to tell you about my findings and my story about ecological balance. People often clear the land for grazing and cut down trees, which causes a great erosion of water and soil. I was inspired to be:

Humanity no longer cultivates wasteland, if not, and there is, but there is no water in the river. Nature has both a punishment and a gift for man. One day, when people saw a bird in the sky, they thought that a bird could fly, and from then on people got many inspirations from animals

For example, radar was developed using bat ears and mouths; Voltaic batteries were developed on luminous fish, and "pig noses" were developed to prevent poisoning; Mask; "saw" grass developed a saw; Dragonfly Eyes developed a compound eye camera; Jellyfish developed storm tests -- these are my discoveries, which are human studies. After talking about my discovery, it's time to tell the story of ecological balance. Once upon a time, there was a village with a big forest in the village, and people went to cut down trees every day to build houses, and one day a sudden flood came to the village, and there was no tree to cover it, and the flood washed away the crops and houses in the village.

My analysis is that because people have cut down too many trees, it has been shown that when the flood came, there was nothing to cover and everything was washed away. My feelings are:

Don't cut down so many trees, or when the flood comes, there will be nothing to cover and it will not be worth destroying everything in the house. In the past, when humans were drying grain, there were always flocks of sparrows to steal the grain to eat, but later people tried their best to eliminate the sparrows, and the yield of the millet was reduced because of this. My feelings are:

Everything in nature is interconnected, and whatever you violate, it will work against you. We learn to get along with them.

1.[Nature's Revelation].

I was about to have my birthday and my dad gave me a cute little turtle.

and standardize and conform to the norms and norms and norms and norms Guofeng hot pot.

1 Imitated by a nasty fly, a very peculiar small gas analyzer was successfully imitated. It has been installed in the cockpit of a spacecraft to detect the composition of the gases in the cabin.

2。From fireflies to artificial cold light;

3。Electric fish with volt batteries;

4。The downwind ears of jellyfish, imitating the structure and function of jellyfish ears, designed the jellyfish ear storm instrument, which can predict the storm 15 hours in advance, which is of great significance to the safety of navigation and fishery.

5。According to the visual principle of frog eyes, people have successfully developed an electronic frog eye. This electronic frog eye can identify objects of a specific shape with the same accuracy as a real frog eye.

After the electronic frog eye is installed in the radar system, the anti-jamming ability of the radar is greatly improved. This radar system can quickly and accurately identify specific shapes of aircraft, ships, missiles, etc. In particular, it can distinguish between real and fake missiles and prevent the real from being confused with the real.

Electronic frog eyes are also widely used in airports and traffic arteries. At the airport, it can monitor the take-off and landing of aircraft, and can issue an alarm if it detects that the aircraft is about to collide. In the traffic arteries, it can direct the driving of vehicles and prevent the occurrence of vehicle collisions.

6。According to the principle of the bat ultrasound locator, people also imitated the "pathfinder" for the blind. This pathfinder is equipped with an ultrasonic emitter that a blind person can carry to spot people on electric poles, steps, bridges, etc. Today, "ultrasound glasses" with a similar effect have also been made.

7。An incomplete photosynthesizer that mimics cyanobacteria will be designed to bionic photolyzed water, so that a large amount of hydrogen can be obtained.

8。Based on the study of the human skeletal muscular system and bioelectric control, a human augmenter - a walking machine has been imitated.

9。The hooks of modern cranes originated from the paws of many animals.

10。The roof corrugated roof mimics the scale armor of animals.

11。The oars mimic the fins of a fish.

12。The saw learns the mantis arm, or sawgrass.

13。Xanthium was inspired to invent Velcro.

14。Lobsters with a keen sense of smell provide ideas for people to make odor detectors.

15。Gecko toes offer an encouraging prospect for creating adhesive tapes that can be used over and over again.

I love nature.

I love nature because it's full of life; I love nature because of it.

Like a beautiful poem, like a colorful fairy tale. Listen, nature is calling!

The blue sky and white clouds are drifting, the sun is smiling, the wildflowers are nodding, the scenery is beautiful, the scenery of nature is so beautiful......"Children practise singing "Good Spring" by German writer Mendelssohn. They play and sing on the green carpet that nature has prepared for them. Yang Liu listened to it and took it proudly"Mirrors"and also comb it"her"The beautiful hair was tied with many green ribbons by the way.

Show to grass and flowers"her"Ona's colorful figure.

Got it, got it. "The cicada cries excitedly in the branches, as if it wants to sing with the newborn baby frog, the tadpole, but the little tadpole can't respond to it, because the little tadpole is sweating profusely to find its mother! The cicada, on the other hand, cannot help the tadpoles, but it also has to show the world its beautiful singing voice.

Eventually, the tadpoles found their mother, and at the same time, they were fascinated by the place where they lingered - on the crystal clear river, floating lotus flowers like young girls in pink, dancing in the breeze, as if to tell people that they were the best dancers in the world, and that they looked even more beautiful against the backdrop of the green, round and pearl-like skirts, and they were blooming brightly, as if they were to rival the girls who watched them.

Rustle, rustle, rustle......."The leaves of the ginkgo tree are like a small golden fan that fans away the heat of summer and brings the coolness of autumn. And accompanying"Rustle"There are also three singers who live in seclusion under the tree - crickets, grasshoppers and oil hyacinths, one by one, bursts, a large area, far and near, forming a grand symphony of nature.

It makes people feel uncomfortable.

Woo woo"With the howling north wind, one after another, a snow has quietly arrived, early in the morning, all white, thousands of trees full of pear blossoms. The straight cement road has been covered with a long white carpet, stretching into the distance, far away, and then where the snow meets, so pure, so crystalline, people can't bear to step on it, so as not to damage this rare, nature has given us silver-white carpet. Children are also giggling and playing on the natural carpet, playing snowball fights, skiing, and ...... on the ice in the parkLook--there's a bunch of cute kids over there, chasing through the endless snow, and loa!

There was a child who fell, and he was not afraid, because this silver carpet was soft, and the child rolled on the soft snow, and stood up, and the child was happy, and the adults laughed, because the child had become real"Snowman"。I saw how free they were, so cheerful! Makes me want to join their game too.

I love nature, his bright spring, his cicadas, his rolling wheat waves, and his silver ......It is like four flowing pictures, slowly spreading out in front of us, slowly blooming with brilliance!! I love nature.