The Collected Papers of Albert Einstein Vol 7 ebook free download

 

The Collected Papers of Albert Einstein Vol 7 ebook free download

The Collected Papers of Albert Einstein Vol 7 ebook free download

The Collected Papers of Albert Einstein Vol 7 ebook free download

INTRODUCT I ON TO VOLUME 7:

across this ntmultuous period from 19 18 to 1921 are more diverse than ever before in his life. For this overview, it will be convenient to divide them into three groups. The first consists of Einste in’s scientific research contributions, t.he most signif-
icam of which were written before November 1918. They are mainly concerned with clarifying outstanding problems in the geDeral theory of relativity, such as t.he cbarncter of grnvitationa l waves (Doc. I), the foundations o f the theory (Doc. 4), the status of singularities (Doc. 5). and energy-momentum conservation (Doc. 9). ln early 1919, Einste in offered a bold sketch for a unified field theory that required modifying the fie ld equations for gravitation (Doc. J 7). Although his lecture notes for re lativity courses he taught in Berlin and Ztui ch (Docs. 12, 19, and 20) are highly fragmentaiy, they Devertheless provide helpful c lues with regard to subtle changes in his technica l approach to the subject. After 19 19, Einste in’s scieutific publications on general relativity ceased almost complete ly while he embarked o n the projecc of explaining his theo1y to a wider aud ience. The most significant work during this peri od o f consolidation for general relativity was the book he wrote as the published version o f his Princeton lecn11·es of 1921 (Doc. 7 I). The few scientific papers he published i.n 1920-1921 were mostly oo subjects other than re laciviry (Docs. 39, 56, 68, and Appendix B}. Ouly one paper (Doc. 54) shows Einstein pur-s uing the project of a unified field theory. The second group are semipopular and popular writings that expounded funda-mental or even e lementacy ideas of the theory of relativity for readers that had only modest scientific training (Docs. 8, 26, 28, 31 , 38, 52, 53, 58, Appendix C). Ein- stein’s earlier textbook, Ei11srei111917a (Vol. 6, Doc. 42), wh.ich had gone through fourteen editions by the end of 1922, remained a classic for the pw·e ly didactic form of this genre. Other writings in the present volume, however, re flect the subsequent whirlwind o f debates that ensued over philosophical or extra-scientific issues asso- ciated with relativity. These compelled Eiosteio not only to explain his theory, but to defend it. In Doc. 13, he uses a famous literary device to achieve both obj ectives, staging a dialogue between a persistent but fair-minded Kritikus, and Einste in ‘s alter ego, the Relati11is1,jus1 as Galileo had done in his defense of the Copernican system. Docs. 8, 25, 26, 28, and 52 address conceptua l and methodological issues in theoretical physics. In the wake of headlines that he had “dethroned Newton.” his article for The Times of London (Doc . 26) not only expresses deep gratitude to the British scientific community but makes a reverentia l bow toward Newton’s immortal theory of gravitation.

The Collected Papers of Albert Einstein Vol 7 ebook free download

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