![The concentric balls are centered at the origin and have radii equal to... | Download Scientific Diagram The concentric balls are centered at the origin and have radii equal to... | Download Scientific Diagram](https://www.researchgate.net/publication/239211116/figure/fig1/AS:671507088957460@1537111174748/The-concentric-balls-are-centered-at-the-origin-and-have-radii-equal-to-one-and-three.png)
The concentric balls are centered at the origin and have radii equal to... | Download Scientific Diagram
![Two Chinese Canton export ivory puzzle balls and stands, early 20th Century, each concentric ball ca Two Chinese Canton export ivory puzzle balls and stands, early 20th Century, each concentric ball ca](https://www.tooveys.com/lots/286312/1027.jpg)
Two Chinese Canton export ivory puzzle balls and stands, early 20th Century, each concentric ball ca
![National Palace Museum>Selections>Ivory balls of nested concentric layers with human figures in openwork relief National Palace Museum>Selections>Ivory balls of nested concentric layers with human figures in openwork relief](https://theme.npm.edu.tw/selection/att/collection/04009167/17010635.jpg)
National Palace Museum>Selections>Ivory balls of nested concentric layers with human figures in openwork relief
Lot - ASIAN: Chinese ivory puzzle ball with stand, 19th C., at least three or four concentric circles rotate freely, dragon motif on outer sphere as well as stand, wear consistent with
Ivory balls of nested concentric layers with human figures in openwork relief - Anonymous — Google Arts & Culture
![Carved ivory ball, composed of 12 freely moveable concentric spheres. Qing dynasty, 19th century AD. During this period the craftsmen were obsessed with exploring their technical limits and ivory provided a particularly Carved ivory ball, composed of 12 freely moveable concentric spheres. Qing dynasty, 19th century AD. During this period the craftsmen were obsessed with exploring their technical limits and ivory provided a particularly](https://c8.alamy.com/comp/G2MX5Y/carved-ivory-ball-composed-of-12-freely-moveable-concentric-spheres-G2MX5Y.jpg)
Carved ivory ball, composed of 12 freely moveable concentric spheres. Qing dynasty, 19th century AD. During this period the craftsmen were obsessed with exploring their technical limits and ivory provided a particularly
![Image of 'Devil's work' ball with 14 concentric balls inside, Canton (ivory) by Chinese School, Qing Dynasty (1644-1912) Image of 'Devil's work' ball with 14 concentric balls inside, Canton (ivory) by Chinese School, Qing Dynasty (1644-1912)](https://images-cdn.bridgemanimages.com/api/1.0/image/600wm.IMJ.0052330.7055475/329321.jpg)