DescriptionS7M0.png English: Created in Orbital viewer [1]. Part of the electron orbital series. Quantum numbers: n=7, l=0, m=0. Source Own work Author
圓極限III(英語:Circle Limit III)是M. C. 埃舍爾(M. C. Escher,又譯艾雪)在1959年完成的木刻版畫,轉移自英文維基百科en:File:Circle_limits_III_with_overlay.png,原始描述:Circle Limit III by M. C. Escher (1959)