Nulllinien
Nulllinien, a term in German-language technical literature, denotes a line representing zero value in diagrams, charts, and various physical contexts. The precise meaning depends on the domain, but in general the Nulllinie represents a baseline or locus where the measured quantity equals zero.
In mathematics, the Nulllinie of a real-valued function f is the set of points where f(x) = 0.
In data visualization and statistics, the term commonly refers to the horizontal line at zero, used as
In physics and engineering, a Nulllinie can denote a reference line where a potential, field, or current
Origins and usage: The term derives from the German words Null and Linie. It is primarily used
See also: Zero line; baseline; zero-crossing; axis; reference line.