The new Einstein-Noether Relativity theory is the merger of Einstein’s relativity theories with Noether’s theorems of energy and momentum conservation by the authors. This merger results into two new solutions to Einstein’s theory of General Relativity: the gravitational field of a sphere and the gravitational...

## Reference frames and Spacetime

LoopdoctorNovember 9November 270Level III Doctor

The theory of General Relativity is not yet finished. Spherical coordinates are not the same as Spacetime. How do you use them and what are the consequences? Read the article

Einstein wrote about the influence of gravitation on time in his theory of General Relativity. Then came Emmy Noether’s theorem: Energy conservation demands invariance of the constants of nature, like the speed of light. She wrote to Einstein that his theory cannot guarantee energy conservation in strong...

## The day Relativity changed

LoopdoctorNovember 30March 60Level I Student, Level II Advanced, Level III Doctor

Einstein published his theory of General Relativity (GR) in stages. Based on these publications, Karl Schwarzschild found two exact solutions in January and February 1916. However, on May the 11th of that year, Einstein published his official GR – with important changes effecting both of Karl’s exact...

Few people understand Einstein’s theories, his errors, and his changes of mind. Karl Schwarzschild did, but Einstein changed his 1915 version of his theory of General Relativity a year later, around the time of Karl’s death. J. Droste was the first to publish the Schwarzschild Solution based on...

## Einstein’s neglected demands of GR solutions

LoopdoctorOctober 26March 60Level III Doctor

The Theory of General Relativity is very complicated mathematics. Einstein formulated a number of demands to ensure that solutions match measurement physics. Exact Schwarzschild solutions have later been changed by astronomers, unscientifically, to get rid of difficult issues.The relevance is great:...

## Albert Einstein debates with Emmy Noether

LoopdoctorAugust 16October 21Level III Doctor

Emmy and Albert knew each other very well. However Einstein never incorporated seriously the brilliant ideas of Emmy Noether. On the homepage of this site we organised and filmed a short virtual debate between the two. So the film corrects history afterwards, for the better of Physics! Because the film is going pretty...

Contrary to popular believe, there are many Schwarzschild Solutions. Karl himself found one to a mass-point and one to a sphere of in-compressible liquid early 1916. After Karl’s death Einstein made important changes in his official publication: he abandoned his g = -1 requirement in a footnote. Nobody checked...

Einstein used a complicated set of tensors in his General Relativity. However in his writing in 1916 he used a Laplace operator, which can help us to determine the gravitational potential inside a sphere without having to go into his field equations. Many surprising results: The behaviour of clocks is in line with all...

## Relativity Solutions need repair

LoopdoctorFebruary 20February 200Level III Doctor

Einstein’s publication in the ‘Annalen der Physik’ urged many scientists to work. Did you know that there are five different Schwarzschild Solutions? How do you know which one is right? This article presents you three ways to check the outcome: The General Relativity Principles, the GR field equations and the Laplace...