The four frescoes by Raphael in the Stanza della Segnatura in the Vatican Museum visually embody close approximations of several numerical ratios that are of deep significance in the material grounding of musical harmonies in the physics of natural harmonics. Of special significance is the Pythagorean musical frequency ratio of 9:8, the (discordant) whole tone interval, which in Plato's Timaeus is called the epogdoôn (‘and an eighth’).

中文翻译：

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拉斐尔的柏拉图式愿景

拉斐尔在梵蒂冈博物馆的 Stanza della Segnatura 中的四幅壁画在视觉上体现了几个数值比率的近似值，这些数值比率对于自然谐波物理学中音乐和声的物质基础具有重要意义。具有特殊意义的是毕达哥拉斯的音乐频率比为 9:8，即（不和谐的）全音间隔，在柏拉图的蒂迈欧被称为埃波登（'和八分之一'）。