Length is a measure of distance. In the International System of Quantities, length is a quantity with dimension distance. In most systems of measurement...

The focal length of an optical system is a measure of how strongly the system converges or diverges light; it is the inverse of the system's optical power...

Length overall (LOA, o/a, o.a. or oa) is the maximum length of a vessel's hull measured parallel to the waterline. This length is important while docking...

A vessel's length at the waterline (abbreviated to L.W.L) is the length of a ship or boat at the level where it sits in the water (the waterline). The...

Arc length is the distance between two points along a section of a curve. Determining the length of an irregular arc segment by approximating the arc segment...

Length contraction is the phenomenon that a moving object's length is measured to be shorter than its proper length, which is the length as measured in...

In physics, the attenuation length or absorption length is the distance λ into a material when the probability has dropped to 1/e that a particle has...

ichthyology, including taxonomy and fishery biology. Standard length (SL) is the length of a fish measured from the tip of the snout to the posterior...

In typography, line length is the width of a block of typeset text, usually measured in units of length like inches or points or in characters per line...

and electrolytes, the Debye length λ D {\displaystyle \lambda _{\rm {D}}} (Debye radius or Debye–Hückel screening length), is a measure of a charge carrier's...