Bats have poor vision, but they like to come out to catch mosquitoes in the evening, and their predation speed and accuracy are amazing. Scientists have discovered that the bat's predation skills are not based on its eyes, but on its "echo detection" skills. Someone once covered

Bat has poor vision, but it likes to come out in the evening to catch mosquitoes, and their predation speed and accuracy are amazing. Scientists have discovered that the bat's predation skills are not based on its eyes, but on its "echo detection" skills. Someone once covered a bat's eyes and placed it in a large glass room with many wires. It still avoided the wire obstacles and caught insects accurately.

It turns out that the echo detection system in the bat's body is very clever. When it is flying, it generates ultrasonic waves from the throat and is emitted through the mouth or nose. When it encounters an object, the ultrasonic waves are reflected back. The bat's ears receive echoes, which can accurately identify the external environment and hunt down insects that are active at night. What's even more amazing is that the bat's ultrasonic detection system can accurately distinguish the properties of objects. For example, some people experimented with removing flourworms and metal debris together. The blindfolded bats can accurately distinguish the properties of these two things, only prey on flourworms and ignore metal debris.

bat's echo detection system also has the characteristics of fast frequency and strong anti-interference ability. It can be imagined that when bats catch food, many situations are when they fly and discover targets. Sometimes they can suddenly change their original flight direction within a few minutes of a second and quickly chase and annihilate the prey. It is estimated that bats can emit and receive (resolve) 250 sets of echoes in one second. In addition, the bat's echo detection system can not only eliminate human interference, but also avoid mutual influence between the same.

In the caves where hundreds of bats live, they emit ultrasound at the same time, and they still do their own things. The radar developed by scientists based on the principle of "echo detection" of bats has been widely used and has continuously improved the radar's sensitivity and anti-interference ability. People also imitated the bat's "echo detection" system and made " sonar glasses" and "blind pathfinder" for night military reconnaissance and blind people.