Newtonian Gravitation – An Overview (Preparation for General Relativity)
In this video (GR - 01), some background ideas to General Relativity, namely Newtonian Mechanics and Newtonian Gravitation, are discussed at more or less the High School level. The outcome of that discussion is, hopefully, to see some of the inadequacies of Newton’s Theory of Gravitation, and also to identify a number of ideas and equations from it which will be useful in formulating Einstein’s General Theory of Relativity - the theory that would replace it.
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.
REPORTED CORRECTION
"Correction: 43:15 The escape velocity here (from the surface of the earth) should read about 11.2 km/s (not m/s)"
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