(electrodynamics) The fundamental physical value α, presumed to be constant, that characterizes the strength of the electromagnetic force.

(physics) Any material that confines electrons in such a small space that their wavelike behaviour becomes important and their properties are strongly modified by quantum mechanical effects; examples include atoms and layered semiconductor devices.

(management) A global hierarchy that represents different levels of responsibilities within a project or enterprise.

(computing) Synonym of stamp coupling

A form of microscopy that employs structured illumination to observe biological structures smaller than the wavelength of the light used

(geometry) A three-dimensional structure representing an idealized foam of equal-sized bubbles, with two different shapes.