Rulers and Protractors Become General Relativity: Difference between revisions
Rulers and Protractors Become General Relativity (edit)
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0.5 | 0.5 ...when I have to describe what General Relativity is, and I don't wish to lie the way everyone else lies (if I'm going lie I'm going to do it differently) I say that: | ||
1. You have to begin with 4 degrees of freedom | 1. You have to begin with 4 degrees of freedom | ||
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5. Those reference levels don't knit together | 5. Those reference levels don't knit together | ||
6. And they form | 6. And they form Penrose stairs | ||
7. And the degree of Escherness, or Penroseness, is what is measured by the curvature tensor | 7. And the degree of Escherness, or Penroseness, is what is measured by the curvature tensor | ||
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9. you throw one of them away, called the Weyl curvature | 9. you throw one of them away, called the Weyl curvature | ||
10. you readjust the | 10. you readjust the proportions of the other two | ||
11. and you set that equal to the amount of stuff. | 11. and you set that equal to the amount of stuff. | ||