Unified Field Theory Publication
Publishes a widely publicized unified-field theory based on teleparallel geometry.
Historical biography archive · Updated 2026-11-03
Albert Einstein Biography and Timeline — Page 5
Follow Albert Einstein through 240 dated historical records for United States of America.
Albert Einstein, historical timeline
A chronological timeline drawn from matching World History Database records.
240Distinct records
5 of 6Page
1929–1936Years on this page
1929
Unified Field Theory and Hamilton Principle
Publishes a unified field formulation based on distant parallelism and Hamilton's principle, continuing his search for equations joining gravitational and electromagnetic fields.
1930
ETH Zurich Honorary Doctorate
Receives an honorary Doctor of Science degree from ETH Zurich.
Caltech Relativity and Cosmology Visit
Begins an extended visit to Caltech where relativity, cosmology and unified-field questions form an important part of his discussions with American physicists and astronomers.
Exact Static Unified-Field Solutions
Publishes work with Walther Mayer giving exact static solutions of unified-field equations, testing whether the programme can represent physically meaningful configurations.
First Caltech Winter Visit
Begins an extended academic visit to the California Institute of Technology.
Riemann Metric and Distant Parallelism
Further develops spaces combining a Riemann metric with distant parallelism, refining the geometric machinery behind his teleparallel unified-field theory.
Sixth Solvay Conference
Attends the sixth Solvay Conference and continues discussions on quantum theory and field physics.
Unified Field Equation Compatibility
Examines the compatibility of equations in the unified-field programme, addressing mathematical consistency before the theory can be regarded as physically viable.
1931
Mount Wilson Hubble Discussion
Visits Mount Wilson and discusses observational cosmology, confronting evidence that distant galaxies exhibit the redshift-distance relation associated with cosmic expansion.
Oxford Honorary Doctorate
Receives an honorary Doctor of Science degree from the University of Oxford.
Expanding Universe Paper
Adopts an expanding cosmological model and abandons the need for his earlier static-universe construction.
Expanding-Universe Cosmology Paper
Publishes a non-static cosmological model within general relativity, accepting cosmic expansion and dispensing with the static balance that motivated his cosmological constant.
Prix Jules Janssen
Receives the Prix Jules Janssen for distinguished work in astronomy and astrophysics.
Static Universe Abandoned
Einstein abandons the need for a static cosmological model after cosmic expansion becomes established, leaving the cosmological constant without its original motivation.
Static Universe Model Abandoned
Abandons his earlier static cosmological model as expanding-universe observations and relativistic cosmology make a dynamical universe the more credible interpretation.
Oxford Rhodes Lectures
Gives three Rhodes Memorial Lectures on relativity, cosmology and his latest work in theoretical physics.
1932
Leopoldina Membership
Becomes a member of the German Academy of Natural Scientists Leopoldina.
Einstein-de Sitter Cosmological Model
With Willem de Sitter, proposes a spatially flat expanding cosmological model without a cosmological constant, providing a simple benchmark solution of general relativity.
Einstein-de Sitter Model
With Willem de Sitter, proposes a simple expanding cosmological model with zero cosmological constant.
Institute for Advanced Study Appointment
Accepts appointment to the newly founded Institute for Advanced Study.
Unified Gravitation and Electricity Theory
Publishes another unified theory of gravitation and electricity, continuing to test alternative geometrical structures beyond the standard equations of general relativity.
1933
Leaves Prussian Academy
Resigns from the Prussian Academy of Sciences after deciding not to return to Nazi Germany.
Glasgow Origins of General Relativity Lecture
Lectures in Glasgow on the origins and development of general relativity, recounting the physical ideas that led from equivalence to curved spacetime.
Oxford Lecture on Theoretical Physics
Lectures at Oxford on the methods and foundations of theoretical physics.
Permanent Move to Princeton
Settles in the United States after the Nazi rise to power and joins the Institute for Advanced Study.
Renounces German Citizenship
Renounces German citizenship after the Nazi seizure of power while retaining Swiss citizenship.
1934
Josiah Willard Gibbs Lecture
Delivers the Gibbs Lecture on an elementary proof of the equivalence of mass and energy.
On the Method of Theoretical Physics
Publishes reflections on how fundamental theoretical physics develops from principles and mathematical structure.
1935
EPR Paper
Einstein, Podolsky and Rosen publish their argument that quantum mechanics may not provide a complete description of physical reality.
Franklin Medal
Receives the Franklin Medal in recognition of his work in relativity and the photoelectric effect.
Bridge Geometry Connects Two Spacetime Sheets
The Einstein-Rosen construction joined two copies of a spacetime solution through a geometric bridge, creating an early mathematical example of what later literature called a wormhole.
Einstein-Rosen Bridge Proposed as Particle Model
Einstein and Nathan Rosen constructed a bridge geometry from solutions of the gravitational field equations while exploring whether particles could be represented without ordinary singularities.
Einstein-Rosen Bridge
With Nathan Rosen, studies bridge solutions in general relativity connecting two sheets of spacetime.
1936
US Declaration of Intention
Files a declaration of intention to become a citizen of the United States.
Gravitational Lens Paper
Publishes a calculation of the lens-like action of a star's gravitational field, describing how general relativity can produce multiple or magnified images of a background source.
Einstein Ring Condition Described
Einstein showed that exact alignment of source, lens and observer produces a circular image geometry, the configuration later widely known as an Einstein ring.
Gravitational Lensing
Publishes a calculation showing how a foreground star can gravitationally lens light from a background star.
Lens-Like Action of a Star Published
Einstein published a short analysis of the lens-like action of a foreground star, giving a compact treatment of image formation and magnification caused by gravitational light bending.
Mandl Prompts Einstein to Publish Gravitational Lensing
After discussions with Rudi Mandl, Einstein returned to the lensing calculation he had explored in 1912 and agreed to publish the optical effect of gravitational light bending.
Records, sources and methodology
These dates and descriptions come from the historical_events database. Exact duplicate records have been collapsed. Names are grouped by the country, Name 2 and Name 1 fields; records with missing Name 2 cannot be reliably assigned to an individual biography. Check the underlying sources before formal citation.