newton
Nearly 350 years ago, Newton discovered three laws describing the motion of objects, the third of which is that "the acting force and the reaction force are equal in size and opposite in direction".
Newton's law of motion lays a foundation for us to understand the operation of the solar system and the relationship between objects and forces acting on them. Newton's law of motion is self-evident, but it has also created a difficult problem that has puzzled scientists for nearly 350 years: three-body.
After describing the earth's orbit around the sun with the law of motion, Newton concluded that after considering adding a third celestial body, such as the moon, they can also help people understand the earth's orbit around the sun. But in fact, it is much more difficult to solve the three-body equation.
It is impossible to calculate the motion state of a three-body system with ordinary mathematical knowledge.
When two celestial bodies with different sizes and different distances rotate around a central point, it is easy to calculate their motion state by Newton's law of motion. However, if the size of three celestial bodies and the distance from the center point are very close, the interaction between them will change and the system will fall into chaos, so it is impossible to calculate the motion state of each celestial body with ordinary mathematical knowledge.
An international research team led by Nicholas Si Tong, an astrophysicist at Raqqa College of Physics, Hebrew University, has taken a big step to solve this problem. Their research paper was published in the latest issue of Nature.
Nicholas Si Tong, an astrophysicist at the School of Physics in Raqqa, Hebrew University, led the solution of the three-body system problem.
Si Tong and Concord Szepsi University in Chile have made full use of the related research achievements in the past two centuries, especially that "an unstable three-body system will eventually eliminate a celestial body and form a stable binary system". This binary relationship is the focus of their research.
The research team did not regard the chaotic state of the system as an obstacle. They use traditional mathematical operations to predict the motion of planets. Si Tong said, "When we compare our prediction with the computer model of their actual motion state, we find that our prediction accuracy is quite high."
Although the research team stressed that their research results are not exact solutions of three bodies, their results are still very useful, enabling physicists to visualize complex physical processes.
Si Tong explained, "Take three black holes orbiting another black hole as an example, their orbits will be unstable-even if one black hole is kicked out, we are still very interested in the relationship between the two black holes left behind". This is very important for us to understand the behavior of survivors in the unstable three-body system in the newly formed stable system and predict the new orbit.
If you want to know more about "the three manifestations left by Newton 350 years ago have been solved by scientists", please continue to pay attention to the column of deep space science and technology information, and deep space Bian Xiao will continue to update more science and technology information for you.
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