Sun Heping: All human activities are closely related to gravity

In life, you will see the mature apples falling to the ground; in the ancient poems, you will read the verses of "flying down three thousand feet, suspected to be the galaxy falling for nine days", these are the result of gravity. The true concept of "force" was proposed by Plato, an ancient Greek philosopher, but from intuition to the concept of "force" to obtaining the strict science of "force". It has gone through a long historical stage and even experienced fierce life and death. struggle……

On the afternoon of June 28, Sun Heping, an academician of the Chinese Academy of Sciences, wrote the first lecture on "My Precision Measurement Gravity and Scientific Research Road", and made the first lecture on the "Precision Specification Hall". The report takes interesting natural phenomena as the starting point, focusing on precision measurement of gravity related knowledge, combined with its own study and scientific research experience, telling the public's concern of gravity knowledge and important technological applications, and thinking about future development. Popular popularization feast for gravity knowledge.

"One of my childhood dreams is that the world is so big, and I want to see it. There is a historical celebrity at 15 kilometers away from my hometown -Xu Xiake. When I was a kid, I also wanted to learn Xu Xiake. Maybe because of this idea, I should be in the middle school classroom. When I first came into contact with gravity knowledge, I was deeply attracted. "Sun Heping told everyone that Galileo Besa Land Tower Experiment overturned the more important view of the object that Aristotle thought, and the roughly obtained by roughly obtained the roughly obtained The gravity value is 9.8 m/s2; Newtonian's law of gravity pointed out that all quality substances will attract each other; after returning to the aircraft, the astronauts lamented that "I haven't felt the gravity of gravity for a long time", which shows that the gravity of the earth is large and direction. And the gravity of the earth is also related to our position.

The process of human production and life is closely related to the gravity field. Humans living on the earth, all activities, and all events that occur, including those invisible and unable to touch, occur in and run in the earth's gravity field. Strongly inhaled the earth. Gravity fields can be described by gravity, gravity, gravity field, gravity acceleration, and gravity field strength. This is gravity.

"The gravity knowledge that systematically contacts in the university classroom, China University of Science and Technology is the earliest university in my country to open a gravitational major, leading the development history of gravity in the country. I learned in university topics that can be used to obtain gravity data with multiple observation technologies. The evolution process of the internal structure of the earth, the evolution of the earth's internal structure, how the earth is formed, the earth month system and its evolution.

At present, at home and abroad, it is rapidly developing quantum gravity technology, and gravity measurement has been widely used in national production and engineering. Monitoring of land water reserves. So far, a clear understanding of the shape of the earth is that the earth is not a positive sphere, but a irregular sphere with a slightly flat pole and a slightly flat equator. Studies on the monitoring of land water reserves in China have shown that the quality loss of water quality in Tianshan and Himalayan is mainly caused by glacier melting. The decrease in groundwater in North China is related to excessive mining (8.3 billion tons per year). Sun Heping called on the audience at the scene, "Scientific research on accelerating the gravity field is an important measure for the country's sustainable development strategy."

Source: Wuhan Science and Technology News

Reporter: Sheng Tian Xiao Kai

Correspondent: Lin Xin

Edit: Xu Lu

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