The Maths of General Relativity (6/8) – Energy fluxes

In this series, we build together the theory of general relativity. This sixth video focuses on the notion of energy, momentum, and how we describe their fluxes with the energy-momentum tensor.

0:00 – Movements of energy
1:34 – The 2D energy momentum tensor
4:41 – The 4D energy momentum tensor
5:30 – Changing coordinates
6:04 – Concrete example 1 – Vacuum
6:58 – Concrete example 2 – Inside a fluid

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Alessandro Roussel,
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