👉 The term "spiraster" is a term used in mathematics and physics to describe an object that has the properties of both a solid and a hollow sphere. It is often used to model objects that have a unique combination of shape, size, and volume. The most common type of spirastern are the spheres, which are commonly used for various applications such as building blocks, musical instruments, and even in scientific experiments.
Spirasterns can be made by combining two or more solid spheres
spiraster