Mathpages.com Reflections on Relativity

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Mathpages.com, specifically the "Reflections on Relativity" section, has sparked discussions regarding its accuracy and alignment with mainstream physics. While some users find the content wordy and difficult to navigate, others praise the quality of the material, noting it as excellent. Kevin Brown, the author, is recognized for his contributions, with endorsements from notable figures like Timothy Gowers. The site offers a detailed exploration of relativity, prompting varied opinions on its clarity and reliability. Overall, it is recommended for those interested in a deeper understanding of relativity, despite its complex presentation.
Al68
mathpages.com "Reflections on Relativity"

Anyone familiar with this site? Any opinions on its accuracy or consistency with mainstream physics? Here's the link: http://mathpages.com/rr/rrtoc.htm.

Thanks,
Al
 
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It is so wordy and rambling that I can't tell whether it is right or wrong.
 


Written by Kevin Brown ( who he ?). All the bits I've studied are excellent. I would highly recommend it.
 

Thread 'Question about Parallel Transport'

In this video I can see a person walking around lines of curvature on a sphere with an arrow strapped to his waist. His task is to keep the arrow pointed in the same direction How does he do this ? Does he use a reference point like the stars? (that only move very slowly) If that is how he keeps the arrow pointing in the same direction, is that equivalent to saying that he orients the arrow wrt the 3d space that the sphere is embedded in? So ,although one refers to intrinsic curvature...
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