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    Albert Einstein Autograph Manuscript Field Equations (unsigned) regarding "the new theory scalar conservation law". 2 full pages of a single sheet, 8.75" x 10.9", undated, with scattered handwritten notes by Einstein, in German. Highly probable to be related to Einstein's studies in his "Unified Field Theory". Within the document, Einstein has notated beside respective equations, " a progression of the field equation", "Divergence equation" and "General divergence theorem". Adjacent to another equation, Einstein has written, "When gik, k is selected as coordinate condition, the g can be adjugated as g = constant. In the new theory scalar conservation law" ("Skalarer Erhaltungssatz").

    Following up on the successes of special relativity, Einstein spent a decade on finding a generalization of special relativity which incorporated Newton's laws of gravity. In 1915 this work led to the formulation of the famous theory of general relativity. This breakthrough made "unification" one of the recurring themes in Einstein's works. In 1952 he noted that "the generalization of the theory of gravitation has occupied me unceasingly since 1916." The key idea in this research program, which is still pursued by theoretical physicists today, is the description of fundamental forces and elementary particles to be written in terms of a single field.

    In this framework, Einstein devoted a considerable effort to the development of a unified field theory, with the goal of unifying Maxwell's theory of electromagnetism and general relativity in a rather elegant geometrical way. In this endeavor Einstein soon realized that compatibility of the field equations central requirement for the mathematical consistency of his idea. An extraordinary document revealing Einstein's use of mathematics – the language of physics – to unlock the unsolved mysteries of the universe. A letter of authenticity from Beckett Authentication Services is included with the lot.

    Condition: Expected folds with staple holes at top and scattered stains; one staple still present which is lightly rusted.

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