Barrier

A barrier or barricade is a physical structure which blocks or impedes something.

Barrier may also refer to:

Barriers

Physical barriers

• Automatic full barriers, which serve to block roads at railway crossings
• Crash barrier, used to prevent vehicles from leaving the roadway
• Crowd control barrier, a type of temporary fencing
• Barrier Treaty, series of agreements that set up the Dutch Barrier, a line of military fortification designed to protect the Dutch in the eighteenth century
• Fitch Barrier, a plastic barrel filled with sand or water, used on highways as an impact attenuator
• Barrier isolator, a physical barrier between a laboratory technician and a work process
• Jersey barrier or K-rail, a type of concrete barrier used to divide highway traffic
• Mojo Barrier, a type of temporary fencing used at festivals and concerts
• Noise barrier, used to attenuate noise pollution
• Roadblock, a temporary installation to control or block traffic on a road
• Thames Barrier, a flood control structure on the River Thames in England
• Separation barrier, a wall or fence which prevents the movement of people across a border, or separates populations
• Vapor barrier, any material used to resist diffusion of moisture through walls, ceilings or floors
• Blood-brain barrier, a separation of circulating blood and the brain extracellular fluid
• Traffic barrier, used to keep vehicles within their roadway
• Indo-Bangladeshi Barrier

Barriers by analogy

• Barrier (computer science), a type of synchronization in parallel computing
  • Memory barrier, an instruction to enforce an ordering constraint on memory operations in a computer program
• Language barrier, difficulty in communications caused by language difference
• Sound barrier, the point at which an aircraft moves from transonic to supersonic speed
• Trade barrier, a restriction of trade by a government

Places

• Barrier, Voerendaal, a place in the municipality of Voerendaal, in southeastern Netherlands
• The Barrier, a lava dam in southwestern British Columbia, Canada
• The Barrier, Great Ice Barrier, Victoria Barrier etc., later 19th-eartly 20th century names for the Ross Ice Shelf, Antarctica
• Barrier Bay, an open bay in Antarctica
• Barrier reef, a type of coral reef running along a coast for a long distance, e.g.:
  • Belize Barrier Reef, a series of coral reefs straddling the coast of Belize
  • Great Barrier Reef, in the Coral Sea off the coast of Queensland in north-east Australia
• Barrier Volcano, an active shield volcano in Kenya
• Gilf Kebir, Arabic for "the Great Barrier" in Egypt
• Great Barrier Island, in the north of New Zealand
• Thames Barrier, a flood control structure on the River Thames in England
• A misspelling of Barriere, British Columbia, a small community in Thompson-Nicola Regional District, British Columbia, Canada
• Wall (Western Sahara)

Physics

• Potential barrier

In fiction

• "Great Barrier", television episode of Law & Order: Criminal Intent
• The Great Barrier (film), a 1937 British film
• Barrier (video game), a 1979 arcade game by Vectorbeam
• Barriers, a UK television series
• Bariera, a 1966 Polish film, released in the U.S. as Barrier
• Barrierfreeman, a fictional character in anime Ultimate Muscle
• The Great Barrier (Star Trek)

Other uses

• Barrier Highway, a state highway in New South Wales, Australia
• Smith Barrier (died 1989), American sports journalist

See also

• Barrière (disambiguation)