QED may refer to:

Mathematics and science

  • Q.E.D. (), used at the end of a mathematical proof
  • Quantum electrodynamics, a field in particle physics
  • QED manifesto and project, a database of mathematical knowledge
  • QED: The Strange Theory of Light and Matter, a 1985 physics book by Richard Feynman
  • Work (electric field), often represented as W=qEd

Computing and electronics

  • QEMU Enhanced Disk, a deprecated disk image format for machine emulation and virtualization
  • QED (text editor), a 1960s line-oriented editor
  • Quantum Effect Devices, a microprocessor design company

Arts, entertainment, media

Literature

  • Quod Erat Demonstrandum, a 1903 novel by Gertrude Stein
  • Q.E.D. (novel), a 1930 mystery novel by Lynn Brock
  • Q.E.D. (manga), a 1997 manga by Motohiro Katou

Albums

  • QED (band), a 1980s Australian band
  • Q.E.D. (Terje Rypdal album), 1993
  • Q.E.D. (Jim Allchin album)
  • Q.E.D. (Acid Black Cherry album), 2009
  • QED Records or Emanem Records

Stage and screen

  • Quod Erat Demonstrandum (film), a 2013 Romanian drama film
  • QED (play), a 2001 play by Peter Parnell about Richard Feynman
  • QED International, a film company

Television

  • KQED (TV), public television station in San Francisco, California, USA; also known as "QED"
  • Q.E.D. (American TV series)
  • Q.E.D. (British TV series)
  • WQED (TV), public television station in Pittsburgh, Pennsylvania, USA; also known as "QED"

Radio

  • KQED-FM (88.5), an NPR radio station in San Francisco, California, USA; also known as "QED"
  • WQED-FM (89.3), an NPR radio station in Pittsburgh, Pennsylvania, USA; also known as "QED"

Other uses

  • Granville Gee Bee R-6, named "Q.E.D.", a 1930s racing monoplane
  • 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

See also

  • KQED (disambiguation), including callsigns KQED -- QED in zone K
  • WQED (disambiguation), including callsigns WQED -- QED in zone W
  • CQED (disambiguation)