What did the dragonfly's compound eyes invent? How does a dragonfly fly?

Dragonflies are good at flying among insects. Their wings are thin and light, which allows them to fly fast and change direction and altitude quickly. The dragonfly's wings have two special structures, the wing knot and the wing mole, which make it an excellent flyer in nature. It has the ability to fly at super high altitudes. What else have humans invented based on the dragonfly's compound eyes? Do you know?

Contents of this article

1. What did the dragonfly's compound eyes invent?

2. How dragonflies fly

3. What do dragonflies and ants teach us?

What did the dragonfly's compound eyes invent?

Today's compound eye cameras can take hundreds of photos at a time. They were invented by imitating the structure of dragonflies' eyes. Dragonflies' eyes are unique. Each of their eyes is made up of thousands of small hexagonal eyes that are closely arranged and combined. Each small eye is a self-contained system, each with its own light-receiving system and sensory cells, and has vision. This kind of peculiar eye is called a "compound eye" in zoology. The dragonfly's compound eyes are the largest and most numerous in the insect world, occupying 2/3 of the head area, and can reach up to about 28,000, which is 10 times that of ordinary insects. The structure is also very peculiar: the upper part looks at the distance, and the lower part looks at the near. In this way, when it catches small insects in the air, it can do so with ease, hitting the target every time, and never misses.

How dragonflies fly

The flying principle of dragonflies is to flap their wings through wing muscles to push down the airflow. When the air pressure under the wings reaches a certain level, they can take off under the interaction of forces. Dragonflies are good at flying among insects. Their wings are thin and light, with front and back wings on each side. They can vibrate 30-50 times per second. Their flying movements are very flexible. They can fly fast and change direction and altitude quickly.

dragonfly:

It is a carnivorous insect. They prey on flies, mosquitoes, leafhoppers, horseflies, midges, small butterflies and moths and other agricultural pests. Dragonflies are an important natural enemy insect that is beneficial to humans. "Dragonfly skimming the water" is the biological characteristic of dragonflies laying eggs in the water. Its larvae live in water, and the life span varies according to the species. Dragonflies generally live for 2 years, and some live for 3 to 5 years. Research on dragonfly wings mainly focuses on mechanical principles and bionics. Because dragonfly wings have two special structures, wing knots and wing moles, they become excellent flyers in nature. Mechanical research has found that when dragonflies flap their wings and turn in the air, their wings will be affected by horizontal forces, vertical forces, torque, bending, and other effects. It was found that the slow flight of dragonflies is very similar to the flight of aircraft.

What dragonflies and ants can teach us

Don't just covet enjoyment and fantasize about getting something for nothing. There is no reward without giving, and there is no harvest without sowing.

This fable comes from a primary school Chinese textbook. It tells the story of a dragonfly who indulged himself in pleasure in the summer. When winter came, he had nowhere to stay. He begged the ants to take him in. The ants educated him and helped him through the winter. The dragonfly also learned the truth of hard work.

The dialogue between the dragonfly and the ant in the text is natural and vivid, which is in line with the characteristics of children's age. The text ends with a dialogue between the dragonfly and the ant. The dragonfly said: "Next year, I will sing my own song and learn to work for the winter days." This expresses the determination of the dragonfly and gives people unlimited reverie.