Nichtsphärischen

Nichtsphärischen is the inflected form of the German adjective nichtsphärisch, used to describe objects or surfaces that are not spherical. The term combines nicht (“not”) and sphärisch (“spherical”) and appears in technical and scientific writing to denote shapes that deviate from a perfect sphere. The form nichtsphärischen is used before certain nouns in phrases such as nichtsphärischen Formen or mit nichtsphärischen Körpern.

Applications and domains include optics, astronomy, and materials science. In optics, nichtsphärische Linsen refers to non-spherical lens surfaces designed to reduce aberrations relative to spherical lenses. In astronomy and planetary science, celestial bodies such as fast-rotating planets or irregular asteroids may be described as nichtsphärisch when their shapes depart from an ideal sphere. In geology and materials science, nichtsphärischen Partikel denote grains or inclusions with irregular, non-uniform surfaces.

Concept and measurement often focus on the degree of asphericity. This can be quantified by mathematical models (ellipsoids, paraboloids, or higher-order surfaces) or by an asphericity parameter. The term is typically used alongside sphärisch (spherical) and asphärisch (aspherical) to contrast ideal shapes with real-world geometries. In computational geometry and engineering, nichtsphärischen shapes appear in simulations of granular media, optical components, and other systems where deviations from sphericity affect behavior or performance.