20: Sir Roger Penrose - Plotting the Twist of Einstein’s Legacy: Difference between revisions
20: Sir Roger Penrose - Plotting the Twist of Einstein’s Legacy (edit)
Revision as of 01:09, 15 March 2020
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https://en.wikipedia.org/wiki/Albert_Einstein | https://en.wikipedia.org/wiki/Albert_Einstein | ||
Eric imputes that Dirac’s hair was not as good as Einstein’s. | Eric imputes that Dirac’s hair was not as good as Einstein’s. | ||
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https://en.wikipedia.org/wiki/Quantum_mechanics | [https://en.wikipedia.org/wiki/Quantum_mechanics Quantum mechanics] | ||
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https://upload.wikimedia.org/wikipedia/commons/thumb/e/e7/Hydrogen_Density_Plots.png/290px-Hydrogen_Density_Plots.png | |||
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https://vignette.wikia.nocookie.net/optical-illusions/images/6/62/Note.gif/revision/latest?cb=20140413232620 | |||
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NB:Roger Penrose and Eric Weinstein are friends with the guy who does the commentary for the cage fighting. What a time to be alive. | |||
[https://www.youtube.com/channel/UCzQUP1qoWDoEbmsQxvdjxgQ Joe Rogan Experience] | [https://www.youtube.com/channel/UCzQUP1qoWDoEbmsQxvdjxgQ Joe Rogan Experience] | ||
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[https://en.wikipedia.org/wiki/Hopf_fibration Hopf Fibration] | The [https://en.wikipedia.org/wiki/Hopf_fibration Hopf Fibration] is the only non-trivial principal bundle that can be visually seen | ||
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https://en.wikipedia.org/wiki/Hopf_fibration#/media/File:Hopf_Fibration.png | |||
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The “[https://en.wikipedia.org/wiki/Hopf_fibration Hopf fibration]”, or the “[https://en.wikipedia.org/wiki/Clifford_parallel Clifford Parallels]” was instrumental in the subject of Twistor Theory. | |||
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There’s also this diagram, which I found at a blog here: http://arkadiusz-jadczyk.eu/blog/tag/penrose/ | |||
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http://arkadiusz-jadczyk.eu/blog/wp-content/uploads/2017/01/Penrose-Rindler-Clifford-parallels.jpg | |||
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And there’s this diagram, which I found at this link ( http://users.ox.ac.uk/~tweb/00001/ ) which is an HTML presentation of “On the Origins of Twistor Theory” - Roger Penrose, 1987 | |||
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http://users.ox.ac.uk/~tweb/00001/robinson.jpg | |||
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Dirac gave a course (2 courses) of lectures on Quantum Mechanics | |||
Course 1 - Basic [https://en.wikipedia.org/wiki/Quantum_mechanics Quantum Mechanics] | |||
Course 2 - [https://en.wikipedia.org/wiki/Quantum_field_theory Quantum Field Theory] but also Spinors | |||
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15:00 = | |||
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In the second course (when Penrose took the course) Dirac deviated from his normal course of lectures to give two or three lectures on [https://en.wikipedia.org/wiki/Spinor#Component_spinors Two Component Spinors]. ([https://arxiv.org/abs/1312.3824 Spinors]) | |||
Denis recommended to Roger a book by Corson (presumably this one: [https://www.amazon.com/Introduction-Tensors-Spinors-Relativistic-Wave-Equations/dp/B0000CIMO7 Introduction to Tensors, Spinors, and Relativistic Wave-Equations], 1953 by [https://www.ias.edu/scholars/edward-michael-corson E.M. Corson] * | |||
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<div data-type="resource" data-timestamp="0: | Other people said that Dirac’s course was just like his book but Roger hadn’t read the book. | ||
(I assume this one? Dirac - [https://www.amazon.com/Principles-Quantum-Mechanics-P-Dirac/dp/1607965607 Principles of Quantum Mechanics]) | |||
18:00 = WEIN - "do you think Dirac understood (Spinors)?… | |||
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Mention of Mathematicians: | |||
* [https://en.wikipedia.org/wiki/Wilhelm_Killing Wilhelm Killing] | |||
* “Lee”? - this Lee https://en.wikipedia.org/wiki/John_M._Lee was in Differential Geometry but was born in 1950. Maybe his father? | |||
* [https://en.wikipedia.org/wiki/%C3%89lie_Cartan Élie Cartan] | |||
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Sir Roger Penrose’s favourite film is [https://en.wikipedia.org/wiki/2001:_A_Space_Odyssey_(film) 2001: A Space Odyssey] | |||
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