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## 2019-01-11 01:55:34 Source: Science and Technology Daily

Line between words

Li Yong

From time to time, Chandrasekhar is a Chinese translation of the Theory of the Black Hole (Higher Education Press, 2018) from the cover of the same series as Landau's textbook, but is the first appearance. The original book came out 36 years ago and is now known, but it has a small flow, many people know that it is not read.

It takes a lot of effort to read this book, and you can simply get lost in the jungle formulas, I want to find a path that will drill straight into the result, but there is no shadow in the result because the results are hidden in the equation. Chandrasekhar loves the equation and loves to die. Most physicists look at the physical properties of equations, astrophysics use only equations to solve current problems, and equations see equations, and their meaning is visible from the structure. He knows that his book is difficult to read because it tells readers that his logical path must be strong enough to withstand, sometimes from 50 steps to the next step, but not as a lazy one. His conclusion is full of six volumes, over 600 pages hidden in the University of Chicago Library.

During the Chandrasekhar University he began to "count stars". In 1928, at the age of 18, he met Sommerfeld, the author of atomic structures and spectroscopy at the University of Madras, India, who told him that things in the book were outdated and that they had to learn new quantum theories. Then he read Fowler's "On Dense Matter" and Eddington's "Internal Structure of the Star". At the age of 19, he calculated the critical mass of the white dwarf on a ship that went to Cambridge for postgraduate students, which undermined the results of Eddington, but unfortunately, he became "in an attempt to kill the old Don Quixote" in the eyes of all. The story of him and Eddington is quite similar to the story of Shaoxia and top martial arts and is common in science and rivers. But in memory of the 100th anniversary of Eddington, Chandrasekhar still praised Eddington as the greatest astrophysicist at that time and speaker of the general theory of relativity.

Chandrasekhar left the astral study in 1939. After more than 20 years he returned to the general theory of relativity (GR), and in 1962 he participated in GR3 (the third general theory of relativity and gravity) in Warsaw as a pupil of elementary school. Singularity, energy theorem, gravitational wave, but without a black hole. Penros's spatial-temporal map and Grammy gravity force figure for the first time showed their faces at a meeting, Chandrasekhar was previously gravitational and now he began to worry about how GR influences the stability of the gravitational body. Although he was "late" (51 years old), the golden age of the GR and the black hole arrived. At that time, there were several smaller partners in the GR (mostly the Zellovič group from the Soviet Union, the Wheeler group and the Emma group in the United States) and met with an interesting question: a rotating black hole would have pulsated itself. Torn up? Young Teukolsky developed the disruption method, while Starobinsky and others used computer simulations to prove that rotating black holes are always stable. Unfortunately, they did not find the right mathematical form and walk halfway through, hurrying up to the black hole of Hawking's radiation. In 1975, Chandrasekhar began to drill into the jungle of equations, and he retired and painted his own Rococo image for eight years. In 1983 he published the Mathematical Theory of the Black Hole and shared the Nobel Prize with William A. Fowler for his achievements in the structure and evolution of stars.

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