Harriss Equation: [math]x^3=x+1[/math]
參考資料：
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[*][url=http://tube.geogebra.org/material/show/id/480255]Harriss Spiral[/url] (GGBTube)
[*][url=http://www.theguardian.com/science/alexs-adventures-in-numberland/2015/jan/13/golden-ratio-beautiful-new-curve-harriss-spiral]The golden ratio has spawned a beautiful new curve: the Harriss spiral[/url]
[*][url=http://www.wolframalpha.com/input/?i=x%5E3%3Dx%2B1]Harriss Ratio[/url] = 1.32471795724475 (WolframAlpha)
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