Three stacks of 13 (2*7-1) golden ratios on the unison (<span class="frac nowrap"><sup><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle \varphi }"><semantics><mrow class="MJX-TeXAtom-ORD"><mstyle displaystyle="true" scriptlevel="0"><mi>φ<!-- φ --></mi></mstyle></mrow><annotation encoding="application/x-tex">{\displaystyle \varphi }</annotation></semantics></math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/33ee699558d09cf9d653f6351f9fda0b2f4aaa3e" class="mwe-math-fallback-image-inline" aria-hidden="true" style="vertical-align: -0.838ex; width:1.52ex; height:2.176ex;" alt="\varphi "></span></sup>⁄<sub><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle \varphi }"><semantics><mrow class="MJX-TeXAtom-ORD"><mstyle displaystyle="true" scriptlevel="0"><mi>φ<!-- φ --></mi></mstyle></mrow><annotation encoding="application/x-tex">{\displaystyle \varphi }</annotation></semantics></math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/33ee699558d09cf9d653f6351f9fda0b2f4aaa3e" class="mwe-math-fallback-image-inline" aria-hidden="true" style="vertical-align: -0.838ex; width:1.52ex; height:2.176ex;" alt="\varphi "></span></sub></span>), perfect fourth (<span class="frac nowrap"><sup><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle 4\varphi }"><semantics><mrow class="MJX-TeXAtom-ORD"><mstyle displaystyle="true" scriptlevel="0"><mn>4</mn><mi>φ<!-- φ --></mi></mstyle></mrow><annotation encoding="application/x-tex">{\displaystyle 4\varphi }</annotation></semantics></math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/16ad5e4edbb5eceb01a67f9b982cdc3c23d6312b" class="mwe-math-fallback-image-inline" aria-hidden="true" style="vertical-align: -0.838ex; width:2.683ex; height:2.676ex;" alt="{\displaystyle 4\varphi }"></span></sup>⁄<sub><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle 3\varphi }"><semantics><mrow class="MJX-TeXAtom-ORD"><mstyle displaystyle="true" scriptlevel="0"><mn>3</mn><mi>φ<!-- φ --></mi></mstyle></mrow><annotation encoding="application/x-tex">{\displaystyle 3\varphi }</annotation></semantics></math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/39291e34614d31b498231c2f7075fe015b420112" class="mwe-math-fallback-image-inline" aria-hidden="true" style="vertical-align: -0.838ex; width:2.683ex; height:2.676ex;" alt="{\displaystyle 3\varphi }"></span></sub></span>), and perfect fifth (<span class="frac nowrap"><sup><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle 3\varphi }"><semantics><mrow class="MJX-TeXAtom-ORD"><mstyle displaystyle="true" scriptlevel="0"><mn>3</mn><mi>φ<!-- φ --></mi></mstyle></mrow><annotation encoding="application/x-tex">{\displaystyle 3\varphi }</annotation></semantics></math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/39291e34614d31b498231c2f7075fe015b420112" class="mwe-math-fallback-image-inline" aria-hidden="true" style="vertical-align: -0.838ex; width:2.683ex; height:2.676ex;" alt="{\displaystyle 3\varphi }"></span></sup>⁄<sub><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle 2\varphi }"><semantics><mrow class="MJX-TeXAtom-ORD"><mstyle displaystyle="true" scriptlevel="0"><mn>2</mn><mi>φ<!-- φ --></mi></mstyle></mrow><annotation encoding="application/x-tex">{\displaystyle 2\varphi }</annotation></semantics></math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/ad4821391226411a32c838657b136fbc986d680b" class="mwe-math-fallback-image-inline" aria-hidden="true" style="vertical-align: -0.838ex; width:2.683ex; height:2.676ex;" alt="{\displaystyle 2\varphi }"></span></sub></span>). <span class="frac nowrap"><sup><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle \varphi }"><semantics><mrow class="MJX-TeXAtom-ORD"><mstyle displaystyle="true" scriptlevel="0"><mi>φ<!-- φ --></mi></mstyle></mrow><annotation encoding="application/x-tex">{\displaystyle \varphi }</annotation></semantics></math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/33ee699558d09cf9d653f6351f9fda0b2f4aaa3e" class="mwe-math-fallback-image-inline" aria-hidden="true" style="vertical-align: -0.838ex; width:1.52ex; height:2.176ex;" alt="\varphi "></span><sup>2</sup></sup>⁄<sub><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle \varphi }"><semantics><mrow class="MJX-TeXAtom-ORD"><mstyle displaystyle="true" scriptlevel="0"><mi>φ<!-- φ --></mi></mstyle></mrow><annotation encoding="application/x-tex">{\displaystyle \varphi }</annotation></semantics></math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/33ee699558d09cf9d653f6351f9fda0b2f4aaa3e" class="mwe-math-fallback-image-inline" aria-hidden="true" style="vertical-align: -0.838ex; width:1.52ex; height:2.176ex;" alt="\varphi "></span></sub></span>, etc.
<a href="//commons.wikimedia.org/wiki/User:Hyacinth" title="User:Hyacinth">Hyacinth</a>
<span class="int-own-work" lang="en">Own work</span>