Einstein

1918 · ref. 5721K — Berlin: Verlag der Königlichen Akademie der Wissenschaften in commission at Georg Reimer Reichsdruckerei 30th May 1918. Near Fine. Imperial 8vo 26 5: 19 cm. 11 pages numbered 448-459. Letterpress on machine paper in original publisher’s brochure on orange-coloured stock with black title printing. First journal issue in the original printed wrappers of Einstein's paper about the energy of a gravitational field. – Contents: ""Einstein in this present paper answers criticisms of his conservation law in general relativity and the pseudotensor used to express it first expressed in »Hamiltonsche Prinzip und allgemeine Relativitatstheorie« 1916. He argues that an integral form of the law is appropriate and shows that the integral of a closed system's total energy is invariant and conserved and can be measured only far from the source. The pseudotensor played the key role in his analysis of gravitational waves."" Einstein Encyclopaedia – Condition: Some pages crease due to handling and reading otherwise fine uncut and therefore unread copy. – Reference: Boni N.: A bibliographical checklist and index to the published writings of Albert Einstein 109; The Collected Papers of Albert Einstein. Volume 7 9; Shields M. C.: Bibliography der Schriften Einsteins. In: Schilpp P. A.: Albert Einstein als Philosoph und Naturforscher 118; Weil E.: Albert Einstein. A bibliography of his scientific papers 1901-1930 99; Calaprice A.: An Einstein Encyclopaedia p. 300. Verlag der Königlichen Akademie der Wissenschaften (in commission at Georg Reimer [Reichsdruckerei]) unknown