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Space Geometry from Ancient Greece to Today

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No Wonder You Wonder!
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Abstract

Geometry is easy, useful, and fun! I can tell you don’t believe me. The way it’s often taught, I can’t blame you. But I will show you how powerful this tool is in this chapter, and maybe you’ll find it interesting, too. You can measure the Universe with it!

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Notes

  1. 1.

    Accurately speaking, the distance NA is Rθ, on the curved Earth, and about equal to Mμ when all those angles are small.

  2. 2.

    Umm… This is a 1 % measurement, correct? It all depends on that “1/5 of a sun” being accurate to 1 % also. How did they do that? People have had lenses since at least 700 b.c. [see Optics]. But a simple pinhole can project an image of the sun as big as you like, and you can measure that very accurately.

  3. 3.

    Thomas Pynchon, Mason and Dixon, Macmillian 1997.

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Phipps, C. (2016). Space Geometry from Ancient Greece to Today. In: No Wonder You Wonder!. Springer, Cham. https://doi.org/10.1007/978-3-319-21680-5_8

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