Puolipallolla

Puolipallolla is a Finnish term that translates to "hemisphere" in English. It refers to half of a sphere, or a semi-sphere. In geometry, a puolipallolla is created by slicing a sphere with a plane passing through its center. This results in two identical semi-spheres.

The term can be used in various contexts. Geographically, it denotes half of the Earth, such as the Northern Hemisphere or Southern Hemisphere, divided by the equator, or the Eastern Hemisphere or Western Hemisphere, divided by the prime meridian. In astronomy, it might refer to half of a celestial body.

In everyday language, puolipallolla can describe any object that has the shape of a half-sphere, such as a bowl, a dome, or a scoop of ice cream. The surface area of a puolipallolla consists of the curved surface and the flat circular base. The volume of a puolipallolla is half the volume of the sphere from which it is derived.