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Bees don't make sounds by vibrating their wings.

Wuhan, November 18, 2003 (People's Daily Online) -- Recently, the deputy county magistrate of Jianli County, Hubei Province, came to the Central Primary School of Huangxiekou Town, visited a sixth-grade primary school student named Nie Li, and asked her a question: What do bees rely on to make buzzing sounds?

The bee has its own articulatory organs, and it does not make sounds by vibrating its wings. Nelly said.

In mid-August, at the 18th National Youth Science and Technology Innovation Competition held in Lanzhou City, 12-year-old Nie Li wrote a scientific ** "Bees Do Not Rely on Wing Vibration to Make Sounds", which won the silver medal of the competition's outstanding scientific and technological projects and the Coats Science Special Award.

This conclusion was reached after more than a year of observation and experiments on bees.

In the autumn of 2001, Nie Li learned from the book "Natural Learning Tutoring for Primary Schools" that bees, flies, mosquitoes and other insects are mute, they have no articulatory organs, but they have wings that can call, and these insects constantly stir their wings at high speed when flying, causing the air to vibrate, so that they produce a buzzing sound. Later, Nie Li also saw in "One Hundred Thousand Whys" that the buzzing of bees comes from the vibration of their wings, up to 200 times per second, and if the wings stop vibrating, the sound also stops. She asked her teacher for confirmation, and the teacher's opinion was the same as in the book.

Last spring, Nie Li went to play in an apiary and found that many bees had gathered on the beehive, their wings were not stirring, and they were still buzzing, so she questioned the textbooks, popular science books and teachers' explanations, and began experimenting and researching bees. She first glued the bee's wings to the wooden board, and the bee still made sounds. She cut off the wings of the bees and could hear the bees.

The two methods were alternated 42 times, using 48 bees each time, and the test results showed that bees could make sounds without vibrating their wings. For the sake of the bee's articulation organs, she glued the bee to the wooden board, carefully searched it with a magnifying glass, observed it for more than a month, and finally found two black dots smaller than rapeseed at the base of the bee's wings.

She pierced the little black dot with a pin, and the bee stopped making a sound. She also brought in some bees, which did not damage their wings, but pierced small black dots and put them under the mosquito net. The bees flew around and there was no sound anymore.

She repeated the test 10 times, and the results were the same. She wrote about this discovery as **, believing that the bee's articulatory organs are these two small black dots.

This story tells everyone: to learn knowledge, to face authority, to have the courage to doubt, dare to explore, and unremittingly experiment** to find the truth. It is far more important to raise a problem than to solve a problem, and only when there are doubts can we discover, invent, create, and achieve.