A method of analysis applied to problems of wave propagation, stating that every point on a wavefront is itself the source of spherical wavelets, and the secondary wavelets emanating from different points mutually interfere.

(physics) A conjecture asserting that it is impossible to create paradoxes by time travel because the past cannot be changed.

(physics) Synonym of Ritz's combination principle

(software, object-oriented design) Synonym of General Responsibility Assignment Software Patterns