Special Relativity – A Short Revision Using Space Time Diagrams
This video (GR - 10) is essentially a short revision of some of the ideas of Special Relativity, which will be needed as a background for General Relativity. Although some Special Relativity equations are stated, and assumed to be at least vaguely familiar, the main approach taken here is via space-time diagrams. These (hopefully) give some insight into what the various equations mean - without having to work through the mathematics, and that ‘visualisation’ (as to what is going on) should be helpful for General Relativity.
The usual topics are considered (in very brief detail), namely: Light Cones, World Lines, Inertial Frames, The Space-Time Interval, Minkowski Space, Time Dilation, Length Contraction, Simultaneity, Space-Like Events, Time-Like Events and Light-Like Events.
This video is part of a series of videos on General Relativity (GR-01 to GR-20), which has been created to help someone who knows a little bit about “Newtonian Gravity” and “Special Relativity” to appreciate both the need for “General Relativity”, and for the way in which the ‘modelling’ of General Relativity helps to satisfy that need – in the physics sense.
The production of these videos has been very much a ‘one man band’ from start to finish (‘blank paper’ to ‘final videos’), and so there are bound to be a number of errors which have slipped through. It has not been possible, for example, to have them “proof-watched” by a second person. In that sense, I would be glad of any comments for corrections ……. though it may be some time before I get around to making any changes.
By ‘corrections and changes’ I clearly do not mean changes of approach. The approach is fixed – though some mistakes in formulae may have been missed in my reviewing of the final videos, or indeed some ‘approximate explanations’ may have been made which were not given sufficient ‘qualification’. Such changes (in formulae, equations and ‘qualifying statements’) could be made at some later date if they were felt to be necessary.
This video (and channel) is NOT monetised
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