First offprint of Einstein’s first conclusive attempt towards the Unified Field Theory, 1925

Albert EINSTEIN: EINHEITLICHE FELDTHEORIE VON GRATIVATION UND ELEKTRIZITÄT. [Unified Field Theory of Gravity and Electricity.] Sitzungsberichte der Preussischen Akademie der Wissenschaften, XXII (1925). Gesamtsitzung vom 9. Juli. Sonderabdruck [Offprint]). Berlin: Verlag der Akademie der Wissenschaften (in commission at Georg Reimer [Reichsdruckerei]), 4th September 1925.

Imperial 8vo (25,4:18,2 cm). 6 pages, numbered 414-419. Letterpress on machine paper, in original publisher’s brochure on orange stock with black title printing.

First offprint in the original wrappers, of Einstein's first conclusive attempt toward creating a unified field theory.

Content: This seminal paper of Einstein marks „a new theory of space with a view to unification of all forms of activity that fall within the sphere of physics, giving them a common explanation" (PMM). The task of unifying nuclear, electromagnetic, and gravitational force is nowadays by many considered the holy grail of theoretical physics.

Condition: Mint.

Rarity: ABPC (1973ff.) and APO (1988ff.) record only 3 copies of this edition at auction (2012, 1994, 1984).

Reference: Boni-Russ-L. 155; Printing and the Mind of Man 416; Schilpp-Shields 196; Weil 147.