Dragonfly s skills, what are the characteristics and abilities of dragonflies

Don't forget to divide it.

Superb skills Dragonflies have very sensitive vision, and most of their heads are occupied by a pair of large compound eyes. Each compound eye is made up of many small eyes, ranging from 100 to 30,000. Each eye is a small camera, and the surrounding objects are constantly ingested to form images.

It can see up to 6 meters.

Stuff. The whole compound eye is spherical, and its curved surface can take care of all directions, and the dragonfly's large head can rotate freely, so that the dragonfly's field of vision is very wide.

In addition to feeling the image of the object, the compound eye can also measure the speed, and when the object moves in front of the compound eye, each small eye reacts in turn, and after processing, it can be connected according to the connection.

The image and time that appear in the small eye determine the speed of movement of the target object. Dragonflies are the best flying insects, and their wings are thin, light, and heavy.

The amount is only grams, but it can vibrate 30 to 50 times per second; They can fly at speeds of up to kilometres per hour and sprint speeds of up to 40 metres.

You see, it resembles a small airplane: flat wings, an elongated belly, and the way it flies smoothly. The dragonfly flies ten.

Flexible, it can not only fly quickly, quickly change direction and altitude, but also glide slowly at a certain altitude, or levitate in mid-air, and even fly upside down and sideways.

Flying, straight up and down, it can be said that you can do whatever you want, and even the most modern aircraft are far from the ability to fly dragonflies. Some dragonflies are able to fly long distances.

Tens of millions of kilometers. The dragonfly's extraordinary flying skills are due to its well-developed wing muscles, the former allowing the wings to flapp, and the latter storing air.

It regulates body temperature and increases buoyancy, so it can stay in the air freely. Its two pairs of membranous wings are covered with criss-crossed wing veins that make dragonflies wings.

It's light and strong. The front edge of the wing has a wing nevus formed by thickening the horn, but don't take this small wing nevus lightly, it is a vibration suppressor for dragonfly flight, which can eliminate the time of flight.

The flutter of the wings, if you remove it, the dragonfly will fly as if it were drunk, swaying and erratic. In the history of aviation, airplanes were caused by violent vibrations.

Wing breakage often occurs, and later the aircraft designers gradually figured out a solution based on the dragonfly's wings, adding a counterweight to each wing of the aircraft.

It is generally large, with long and narrow wings, membranous, reticulated wing veins that are extremely clear, and has a strong flight ability, up to 10 meters per second, and can turn abruptly, and can go straight into the sky, and sometimes fly backwards. When resting, spread your wings flat on your sides or stand upright on your back. The forewings and hindwings are not similar, and the hindwings are often larger than the forewings.

The anterior edge of the wing, near the apex of the wing, each has a wing nevus, which is rectangular or square, which maintains the regularity of the wing vibration and prevents injury due to tremor. The head can rotate flexibly, with 1 pair of compound eyes, which are larger, accounting for about 1 2 of the head, and are composed of more than 28,000 small eyes. Extremely sensitive vision, 3 in one eye; antennae 1 pair, thin and short; Chewing mouthparts.

The abdomen is elongated, flattened, or cylindrical with an anal appendage at the end. The feet are thin and weak, with hooked spines that catch pests while flying through the air. Before the rain, it likes to fly back and forth at low altitudes.

Male and female copulation also takes place in the air. Most females fly on the surface of the water by "spotting" their eggs in the water several times, and some insert their abdomen into shallow water to lay their eggs at the bottom. Juvenile water flies, which breathe in water with the gills of the rectum trachea.

Generally, it takes more than 11 molts, 2 or more years to crawl out of the water along the aquatic weeds, and then finally molt and emerge into adults. In the water, larvae can prey on animals or other small animals, and sometimes cannibalism of their own kind. In addition to a large number of mosquitoes and flies, adult insects can also prey on butterflies, moths, bees and other pests, which are actually beneficial insects.

Dragonflies fly very fast, some at speeds of up to 100 kilometers per hour, and they can stop in the air for short periods of time. It can't change direction flexibly when it flies forward, it has to hold its body and then turn. The wings are still outstretched when resting, that is, the wings cannot be folded, so there should be considerable space for the place to stay, mostly on the branches or the top of the leaves.

1. Features: Dragonflies are the insects with the most eyes in the world. Dragonflies have large, bulging eyes that occupy most of the head, with three single eyes and compound eyes consisting of about 28,000 small eyes.

2. Skills: Dragonflies have excellent eyesight, and can also look up, down, forward, and backward without turning their heads. The compound eye can also measure speed, and when the object moves in front of the compound eye, each "small eye" reacts in turn, and the speed of the target object can be determined after processing.

Dragonfly wings are well developed, the front and rear wings are equal and narrow, membranous, the reticulate wing veins are extremely clear, and the flight ability is very strong, up to 10 meters per second, which can turn suddenly, go straight into the sky, and sometimes fly backwards. When resting, spread your wings flat on your sides or stand upright on your back.

Dragonflies come in a variety of colors, including red, yellow, black, grass green, and flower colors. The dragonfly is a flying insect that can be compared to the speed of the women's 100-meter sprint world champion and the speed of a running train.

The dragonfly's long wings, which support its body smoothly, fly freely, and even the wind will not make it shake. Above the leading edge of each wing, there is a beautiful thickened section of skin, biologically called a wing nevus or wing eye, which plays a role in smooth flight.

The flight speed is 50 70 kilometers per hour. Its long-range flight is even more amazing. There is a species of dragonfly available from the east coast of England.

Cross the sea to France for a tour. There is also a species of sea dragonfly that can travel from the equator.

Nearby fly to Japan. Australian sea dragonflies are available from Australia.

The continent flies to the sea area 500 kilometers away from the mainland and cruises, and a round trip is 1,000 kilometers. Therefore, the ability of dragonflies to fly is very famous in the insect world.

According to this revelation, people add a counterweight to the two wings of the aircraft, so as to avoid the accident that the aircraft often fails to control and even breaks the wings due to violent vibration when flying at high speed.

The eyes of insects are unique, and each of their eyes is almost made up of thousands of hexagons.

The small eyes are tightly packed together.

formed. Each small eye has its own system, each with a refractive system and sensory cells, and all have vision, this peculiar eye is called "compound eye" in zoology.

The compound eyes of dragonflies are the largest and most in the insect kingdom, accounting for 2 3 of the total area of the head, up to about 10,000 birds, 10 times that of ordinary insects, and the structure is very peculiar: the upper part looks at the distance, and the lower part looks close. In this way, when it catches small insects in the air, it can be handy, and it will never miss.

<>1. Dragonflies have superb flying skills and are important research objects in biomimetic engineering. In addition, its large compound eyes allow it to easily catch small prey in high-speed flight, and its field of view is almost 360 degrees.

2. Dragonfly is an excellent mosquito catcher, like a small airplane, with strong flight ability, known as the "aviator" of the insect world.

3. Dragonfly is also a qualified "weather forecaster". If they fly low in the air in groups, it is a sign that heavy rain is coming.