California Institute of Technology
Einstein Papers Project


Albert Einstein (1879–1955), one of the foremost scientists and public figures of the 20th century, revolutionized our views of time and space, matter and light, gravitation and the universe.

The Einstein Papers Project is engaged in one of the most ambitious scholarly publishing ventures undertaken in the history of science. The Collected Papers of Albert Einstein provides the first complete picture of Einstein’s massive written legacy.


Published Volumes

Online / On Paper

The Collected Papers of Albert Einstein series now covers Einstein's life and work up to his 46th birthday. It presents, as annotated full text, 400 writings by Einstein and 3,450 letters written by and to him. An additional 2,654 documents appear in abstract.

Einstein Archives Online

A unique resource: You can access our database of 80,000 records of all known Einstein manuscripts and correspondence and also search the full text of 2,000 digitized items.



Princeton News: Digital Edition of Volume 14 of The Collected Papers of Albert Einstein Now Available

Princeton University Press is pleased to announce that Volume 14 of The Collected Papers of Albert Einstein (The Berlin Years: Writings & Correspondence, April 1923–May 1925) is now available for access through The Digital Einstein Papers. The latest volume in the series shows Einstein fleeing from Germany in the wake of threats on his life while pondering a unified theory of gravitational and electromagnetic fields.

Those who delve into this digital edition will discover more than one thousand letters and several dozen writings, covering the years immediately before the final formulation of the new quantum mechanics. The discovery of the Compton effect in 1923 vindicates Einstein's light quantum hypothesis. Niels Bohr still criticizes Einstein's conception of light quanta and advances an alternative theory, but Walther Bothe and Hans Geiger perform a difficult experiment that decides in favor of Einstein's theory. At the same time, Satyendra Nath Bose sends a new quantum theoretical derivation of Planck's radiation law to Einstein, who then applies it to the ideal gas and predicts what is now known as Bose-Einstein condensation. Volume 14 also documents his collaborative preoccupation with a large number of new experiments designed to test these subjects, as well as an entire series of theories and proposed observations meant to interrogate what he called the "electromagnetic bookkeeping" of the Earth. These latter ideas were part of his ongoing attempts to formulate a unified theory of the gravitational and electromagnetic fields. [Read More] 11-22-16

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