4 pp. Illustrated with portrait of August Mach from photograph. 27x19.5 cm (10½x7¾"). original printed wrappers. Very rare author's offprint of the eulogy by Albert Einstein for Ernst Mach, as first published in Physikalischen Zeitschrift. A noted scientist in his own right, Ernst Mach is best known for the concept of "Mach's principle" which asserts that an entity's inertial mass is determined by all the other masses in the universe. Einstein in fact coined the phrase "Mach's principle" and his application of it had major ramifications for the development of his theory of general relativity - Einstein in 1918 labeling it one of the "three pillars" of general relativity. This copy belonged to Hans Albert Einstein, Albert Einstein’s oldest son, with his inkstamp at top of front wrapper; it was very probably presented to him by his father. The imprint on the front wrapper reads: "Sonderdruck aus der Physikalischen Zeitschrift, Verlag von S. Hirzel in Leipzig." OCLC/WorldCat locates four copies, two at the University of Toronto, one at the Smithsonian Institution, and one at the American Philosophical Society. Neatly written at top of front wrapper is "43" and date "14.III.16." Weil 89.
4 pp. Illustrated with portrait of August Mach from photograph. 27x19.5 cm (10½x7¾"). original printed wrappers. Very rare author's offprint of the eulogy by Albert Einstein for Ernst Mach, as first published in Physikalischen Zeitschrift. A noted scientist in his own right, Ernst Mach is best known for the concept of "Mach's principle" which asserts that an entity's inertial mass is determined by all the other masses in the universe. Einstein in fact coined the phrase "Mach's principle" and his application of it had major ramifications for the development of his theory of general relativity - Einstein in 1918 labeling it one of the "three pillars" of general relativity. This copy belonged to Hans Albert Einstein, Albert Einstein’s oldest son, with his inkstamp at top of front wrapper; it was very probably presented to him by his father. The imprint on the front wrapper reads: "Sonderdruck aus der Physikalischen Zeitschrift, Verlag von S. Hirzel in Leipzig." OCLC/WorldCat locates four copies, two at the University of Toronto, one at the Smithsonian Institution, and one at the American Philosophical Society. Neatly written at top of front wrapper is "43" and date "14.III.16." Weil 89.
.jpg "Source: Christie's")
.jpg "Source: Christie's")
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.jpg "Source: Christie's")
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