Encyclopedia > Concentric spheres

Article Content

Concentric spheres

Concentric spheres are spheres of differing sizes which share the same center.

All Wikipedia text is available under the terms of the GNU Free Documentation License

Search Encyclopedia

Search over one million articles, find something about almost anything!

Featured Article

... and 818 families residing in the town. The population density is 81.3/km² (210.6/mi²). There are 3,008 housing units at an average density of ...