Loop

Loop or LOOP may refer to:

Computing

• Loop (computing), a method of control flow in computer science
• Loop device, a Unix device node that allows a file to be mounted as if it were a device
• LOOPS, the object system for Interlisp-D
• LOOP (programming language), the pedagogical primitive recursive programming language with bounded loops

Technology

• Loop (telecommunication), sending a signal on a channel and receiving it back at the sending terminal
• Audio induction loop, an aid for the hard of hearing

Mathematics

• Loop (algebra), a quasigroup with an identity element
• Loop (graph theory), an edge that begins and ends on the same vertex
• Loop (topology), a path that starts and ends at the same point

Sports

• Loop jump, a figure skating jump
• Flight (cricket) or loop, an aspect of bowling in cricket
• Aerobatic loop, a type of aircraft aerobatic maneuver
• Loop, a type of offensive shot in table tennis
• Loop, a type of playboating maneuver

Transportation

• Loop (Texarkana), a roadway loop around Texarkana, Arkansas
• Loop route, a main route or highway that forms a closed loop
• Ring road or loop, a main route or highway that encircles a town or city

Rail

• Balloon loop, a section of track that allows reversal of direction without stopping
• Loop line (railway), a branch line that deviates from a direct route and rejoins it at another location
• Passing loop, a short section of track that allows trains to pass on a single track route
• Spiral (railway), a section of track that allows a train to climb a steep hill
• Loop (Amtrak train), a discontinued Amtrak train
• The Loop (CTA), a section of CTA track in Chicago

Geography

• Loop, Germany, a municipality in Schleswig-Holstein, Germany
• Loop, West Virginia
• London Outer Orbital Path, a signed walk around the edge of Outer London, England
• Chicago Loop, the downtown neighborhood of Chicago, Illinois bounded by the elevated railway The Loop (CTA)
  • Loop Retail Historic District, a shopping district in the Chicago Loop
• Louisiana Offshore Oil Port, a deep-water port in the Gulf of Mexico off the coast of Louisiana
• Delmar Loop, an entertainment district in St. Louis, Missouri

Music

• Loop (music), a finite element of sound which is repeated by technical means
• Loop (band), a London rock band
• Loop (album), a 2002 album by Keller Williams
• "Loop" (song), a song by Maaya Sakamoto

Organizations

• Loop (mobile), a mobile virtual network operator in Bulgaria
• Loop Mobile, a mobile phone operator in India
• LOOP Barcelona, a platform for video art based in Barcelona, Spain

Other uses

• Loop (biochemistry), a flexible region in a protein's secondary structure
• Loop (education), the process of advancing an elementary school teacher with his or her class
• Loop (film), a 1999 romantic comedy
• Loop (knot), one of the fundamental structures used to tie knots
• Loop (novel), a novel in the Ring series by Koji Suzuki
• Loop (roller coaster), a basic roller coaster inversion
• Loop, a type of fingerprint pattern
• Film loop, the slack portion of the film around the projector lens in a movie projector
• Porn loop, an 8 or 16 mm video "short" of a pornographic nature that could be purchased from men's magazines starting in the 1950s. The subsequent advent of home video in the late 1970s rendered them obsolete.

See also

• Line echo wave pattern (LEWP)
• Loop 101, see Arizona State Route 101, a semi-beltway of the Phoenix Metropolitan Area
• Loop 202, see Arizona State Route 202, a semi-beltway of the Phoenix Metropolitan Area
• Loop 303, see Arizona State Route 303, a semi-beltway of the Phoenix Metropolitan Area
• Loupe, a small magnifying glass used by jewelers, watchmakers, and other precision craftsmen
• The Loop (disambiguation)
• Inner loop (disambiguation)
• All pages with titles containing Loop
  • Pretzel loop
• Circle
• Cycle (disambiguation)
• Cycle graph
• Electronic circuit
• Hoop (disambiguation)
• Möbius strip
• Ring (disambiguation)
• Loophole
• Loopy (disambiguation)