I argue that, contrary to folklore, Einstein never really cared for geometrizing the gravitational
or (subsequently) the electromagnetic field; indeed, he thought that the very statement that …

Why did Einstein tirelessly study unified field theory for more than 30 years? In this book, the
author argues that Einstein believed he could find a unified theory of all of nature's forces by …

I like sailing. On many of my sailing trips I join my former colleague and friend Frieder 1, who
is an electrical engineer by education. You can imagine that especially if the wind has …

A historical account of Einstein's Fernparallelismus approach toward a unified field theory of
gravitation and electromagnetism is given. In this theory, a space–time characterized by a …

Einstein’s Unified Field Theory Program Page 1 Einstein’s Unified Field Theory Program
Tilman Sauer ∗ Einstein Papers Project California Institute of Technology 20-7 Pasadena, CA …

In this paper, a traversable wormhole in the Friedmann–Lemaître–Robertson–Walker
(FLRW) model with one extra spacelike compact dimension is studied. We have chosen …

We discuss Einstein's knowledge of projective geometry. We show that two pages of
Einstein's Scratch Notebook from around 1912 with geometrical sketches can directly be …

On the tenth of June, 1933, Albert Einstein gave the Herbert Spencer lecture at Oxford
University, entitled" On the Method of Theoretical Physics." In this lecture, Einstein drew on …

We use experimental limits on Lorentz violation within the framework of the Standard-Model
Extension to derive quantitative constraints on Space-Time-Matter theory, a version of …

In this note, we point attention to and briefly discuss a curious manuscript of Einstein,
composed in 1938 and entitled “Unified Field Theory,” the only such writing, published or …