QED may refer to:

Mathematics, science, and technology

* Q.E.D. (), used at the end of a mathematical proof *

Quantum electrodynamics In particle physics, quantum electrodynamics (QED) is the relativistic quantum field theory of electrodynamics. In essence, it describes how light and matter interact and is the first theory where full agreement between quantum mechanics and spec ...

, a field in particle physics * QED (text editor), a 1960s line-oriented editor * QED manifesto and project, a database of mathematical knowledge * QEMU Enhanced Disk, a deprecated disk image format for machine emulation and virtualization * Quantum Effect Devices, a microprocessor design company

Television

KQED (TV) KQED (channel 9) is a PBS member television station licensed to San Francisco, California, United States, serving the San Francisco Bay Area. The station is owned by KQED Inc., alongside fellow PBS station KQEH (channel 54) and NPR member KQED-F ...

, public television station in San Francisco, California * ''Q.E.D.'' (U.S. TV series) * ''Q.E.D.'' (UK TV series) *

WQED (TV) WQED (channel 13) is a PBS member television station in Pittsburgh, Pennsylvania, United States. Owned by WQED Multimedia, it is sister to public radio station WQED-FM (89.3). The two outlets share studios on Fifth Avenue near the Carnegie M ...

, public television station in Pittsburgh, Pennsylvania

Music

QED (band) QED were an Australian new wave trio, whose lead singer, Jenny Morris, went on to achieve commercial success as a solo artist.McFarlane (1999). Encyclopedia entry fo'Jenny Morris' Retrieved 4 January 2010. The band had a top twenty hit single, ...

, a 1980s Australian band * ''Q.E.D.'' (Terje Rypdal album), 1993 * ''Q.E.D.'' (Jim Allchin album) *

QED Records Emanem Records is a record company and independent record label founded in London, England in 1974 by Martin Davidson and Madelaine Davidson to record free improvisation. Its headquarters moved to New York City (1975–76), New Jersey ...

or Emanem Records

Other uses

* Granville Gee Bee R-6, named "Q.E.D.", a 1930s racing monoplane * '' QED: The Strange Theory of Light and Matter'', a 1985 physics book by Richard Feynman *''Quod Erat Demonstrandum'', a 1903 novel by

Gertrude Stein Gertrude Stein (February 3, 1874 – July 27, 1946) was an American novelist, poet, playwright, and art collector. Born in Pittsburgh, Pennsylvania, in the Allegheny West neighborhood and raised in Oakland, California, Stein moved to Pari ...

* ''Q.E.D. (novel), a 1930 mystery novel by Lynn Brock * ''Quod Erat Demonstrandum'' (film), a 2013 Romanian drama film * ''QED'' (play), a 2001 play by Peter Parnell about Richard Feynman * ''Q.E.D.'' (manga), a 1997 manga by Motohiro Katou *

QED International QED International is a Los Angeles-based independent film production studio, financier and international distributor. It is best known for financing and producing District 9, Fury, and Dirty Grandpa. History Bill Block formed QED Internation ...

, a film company * QED: Question, Explore, Discover, annual skeptical conference held in Manchester, UK * Quami Ekta Dal, a regional political party in India * Quiet Electric Drive, a US Navy program to develop technologies for silent maritime propulsion {{disambiguation