eltolást

Eltolás is a Hungarian term meaning displacement, offset, or shift, used across disciplines to denote moving away from a reference position or a difference between quantities. It can refer to physical movement, or to a difference between measurements, signals, or objects.

In mathematics and geometry, eltolás commonly refers to translation: a rigid motion that moves every point of a figure by a fixed vector, preserving shape and size and not rotating.

In physics and engineering, eltolás describes displacement of an object, or an offset in a measurement or sensor output, such as a constant offset that must be subtracted to calibrate.

In geology and geoscience, eltolás denotes the horizontal or vertical displacement along a fault, the amount by which rock units have shifted relative to each other.

In astronomy, eltolódás refers to spectral shift, including vöröseltolódás (redshift) and kékeltolódás (blue shift) of light due to motion relative to the observer.

In computer science and data handling, offset or eltolás is the distance from a base address or index within a data structure, used in addressing and memory management.

The term derives from the Hungarian verb tolni (to push) with the el- prefix indicating removal or movement away; it is often used interchangeably with elmozdítás in some contexts, although elmozdításmore commonly means general movement, while eltolás emphasizes lateral displacement or offset.