Three Body 1: Earth's Past

Chapter 39 Notes
[1] See "Ball Lightning" published by the author in 2004

[2] This refers to Asimov's science fiction novel "Billards".

[3] One of the most outstanding contemporary physicists, has made great achievements in experimental physics research.She proved for the first time in the laboratory the theoretical conjectures of Li Zhengdao and Yang Zhenning on parity non-conservation in weak interactions, overturning the law of parity conservation.

[4] At that time, in most colleges and universities, these two majors were integrated.

[5] The first generation of computer high-level language.

[6] The problem of how three objects with the same or similar mass move under the action of mutual gravitation is a classic problem in classical physics, which is of great significance to the study of celestial body motion and has been concerned since the sixteenth century.Swiss mathematician Euler, French mathematician Lagrange, and some scholars with the help of computer research in recent years have found some special solutions to the three-body problem.

[7] French mathematicians in the [-]th century once proved that the three-body problem is unsolvable in mathematics, and started from the three-body problem to create a new mathematical method on the differential equation problem.

[8] The founder of modern computer technology.

[9] Founder of cybernetics.

[10] French astronomer Roche proved that any solid celestial body, when approaching another celestial body much larger than it, will be subjected to strong tidal forces and will eventually be torn to pieces.The distance at which this smaller object will be shredded is known as the Roche limit, and is usually 2.44 times the equatorial radius of the large object.

[11] In order to pass through the 32-meter-wide lock of the Panama Canal, a considerable number of large ocean-going ships are designed to be 31 meters wide, known as the Panama-scale type.

[12] The main artificially excavated part of the Ma Canal, the channel is narrow.

[13] The engineer who designed and built the Panama Canal, Gaillard Waterway is named after him.

(End of this chapter)