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<> dragonfly's big eyes are made up of 10,000 to 28,000 small eyes. This is the most common in insect festivals, so it has particularly good eyesight among insects, and can see clearly five or six meters away. Dragonfly eyes appear round and large, taking up almost 2 3 of the area of its head.
Moreover, the dragonfly eye has a very interesting function: the upper part of the whole eye is responsible for seeing distant objects, and the lower half is responsible for seeing near objects, and this division of labor makes it suitable for predation, both near and far, timely and accurate. But if you quickly shake the upper part of the dragonfly's eyes, it will be dizzying and easy to catch, which is also the weakness of the dragonfly's eyes.
Dragonfly eyes are particularly sensitive to moving objects and can determine the direction and speed of prey based on the direction and time it takes for small flying insects to move from one eye to another. When an object suddenly appears, it takes seconds for the human eye to see the outline, while it takes less than seconds for a dragonfly to see clearly. So, it's easy for dragonflies to catch their prey.
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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 dragonfly that travels from the east coast of England to France.
There is also a species of sea dragonfly that can fly to Japan from near the equator. Australian sea dragonflies can fly from the Australian mainland to 500 kilometers from the mainland to cruise in the sea, 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 almost every one of their eyes is made up of thousands of small hexagonal eyes arranged in close proximity. 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.
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Dragonflies have 1 pair of compound eyes, each of which is composed of many small eyes, and the compound eyes are composed of about 28,000 small eyes.
Dragonflies are the insects with the most eyes in the world. Dragonflies have large, bulging eyes that take up the majority of their heads, they have excellent eyesight, and they can look up, down, forward, and backward without having to turn their heads.
Each eye is a small camera, and the surrounding objects are constantly ingested to form images. It can see things up to 6 meters. 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, their compound eyes can measure speed. When an 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. This makes them masters of insect catchers in the insect world. Its chewing mouthparts are well-developed and powerful.
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Dragonflies have 28,000 small eyes per compound eye, which are shared by both compound eyes10,000 glasses.
The dragonfly in nature is a compound eye, the compound eye of the dragonfly is the largest and most in the insect world, accounting for 2 3 of the entire head, and the two large compound eyes of the dragonfly are composed of 28,000 small eyes, so there are 10,000 dragonfly eyes, which is 10 times that of ordinary insects.
As the animal with the most eyes in the world, dragonflies not only have many eyes, but each eye has its own system, and its source has its own refractive system and sensory cells, so they all have vision. This also leads to the dragonfly's astonishing eyesight throughout its eyes, with the upper part looking far and the lower part looking close. This kind of vision also allows dragonflies to catch small insects in the air, and they never miss.
Dragonfly compound eyes introduced:
Insects don't have good eyesight, but dragonflies are an exception, their compound eyes are particularly large, and the entire head is almost occupied by the two protruding compound eyes.
The compound eye is relative to the finger monocular and is made up of most small eyes. Each eyelet has structures such as cornea, crystal vertebrae, pigment cells, retinal cells, and rod vidouqing, and is an independent photoreceptor unit. Axons protrude posteriorly from retinal cells and cross the basal membrane to form the optic nerve.
The structure of the dragonfly's eyes is also very special. A small eye in the upper part of the compound eye that specializes in seeing distant objects. The small eyes in the lower part are dedicated to looking close.
In addition to this, the eyes of insects are mostly immobile. But dragonflies' eyes can move freely with their necks, so dragonflies can look around left and right.
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