Plancksche
Plancksche is a German attributive adjective used to indicate that a term or concept is named after the physicist Max Planck or originates from his work. In scientific German it appears in compound nouns such as Plancksches Wirkungsquantum and Plancksches Strahlungsgesetz, where the Planck name signals the origin of the concept. The form is part of standard nomenclature in physics and related fields, and the exact ending changes with grammatical case and gender as in other adjectives.
Origin and scope: The term reflects Planck’s central role in the development of quantum theory at the
Examples: Plancksches Wirkungsquantum denotes the quantum of action, commonly associated with the constant h. Plancksches Strahlungsgesetz
See also: Max Planck, Planck constant, black-body radiation, quantum theory.