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On the Ratio of Circumference to Diameter for the Largest Observable Circles: An Empirical Approach

I present here a measurement of pi as determined for the largest observable circles. Intriguingly, the value of 16/5 asserted by the House of Representatives of the State of Indiana in 1897 is still viable, although strongly disfavored relative to 22/7, another popular value. The oft-used `small-circle' value of 3 is ruled out at greater than 5σ. We discuss connections with string theory, sterile neutrinos, and possibilities for (very large) lower limits to the size of the Universe.

preprint2012arXivOpen access
Lloyd Knox
astro-ph.IMphysics.pop-ph
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Lloyd Knox

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