Further concepts of Special Relativity are introduced. We present Lorentz transformations in more detail, talk about Lorentz invariance as a fundamental symmetry of nature, and then introduce Noether’s theorem. This leads to a discussion of the energy-momentum tensor, its properties and conservation.
Quick and dirty overview of the tools and concepts of tensor calculus. Discusses indices, the metric, the line element, as well as some simple index gymnastics.
Introduction for laypeople into the theory of Special Relativity.
Introduction to the concept of tensor, aimed at interested lay people.
A short exposition on why gravity cannot be modeled as an electromagnetic phenomenon.