Concentric spheres

Concentric spheres are a geometric concept where multiple spheres share the same center but have different radii. This means that the spheres are nested within one another, with one sphere lying inside another. The distance from the center to the surface of each sphere varies depending on the radius of that particular sphere. In various fields, concentric spheres can have specific applications: 1. **Physics and Astronomy**: They can model certain physical phenomena, such as gravitational fields around a central body or layers in planetary bodies.