The sound-producing elements of the organ, which distinguish it from all other musical instruments. Each pipe produces a single tone, and it takes a series of them, one per key, to play the entire gamut of the keyboard. Such a series is called a Rank, because the pipes are usually arranged in a row for mechanical reasons. Pipes are of two classes: flue pipes, with no moving parts except the air, like a whistle; and reed pipes, which have a vibrating tongue producing the tone and a resonator to modify its quality.

Organ pipes fall into one of four broad sound categories: principal, flute, string, and reed. The first three types are known as "flue" pipes and work like whistles. The majority of organ pipes are flue pipes. In contrast to the whistle-like flue pipes, the reed pipes work like clarinets or saxophones, but have a brass "tongue" instead of a cane reed. Some of the reed pipes are the loudest pipes in the organ.

The source of musical sound on an organ. Pipes may be made of wood or metal, and they may be open or stopped with caps. Their pitch depends on their length and nature, and their tone depends on their shape and the material from which they are made. Each pipe produces a single tone and is linked to a note on a keyboard or pedalboard.

Virtually all tribes smoked for relaxation. At certain auspicious moments, however, smoking took on great importance — for instance, to establish a bond or to reconcile differences (hence the term "peace pipe"). Also see tomahawk.

US term for the bars on which scenery and lanterns are flown.

Another term for the goalposts.

A pipe is a mechanism in Unix that allows several programs to be running concurrently with the output from one being passed to the next as input. Click for more information.

Pipes are a first in, first out method of interprocess communications. A pipe is opened similar to a file under UNIX. Different processes may write to and read from a pipe.

(Water): Damage from burst water pipes is covered within your dwelling coverage limit. Damage to pipes themselves is also covered.

A pipe is a slang term, used commonly among English-speaking electrical engineers, for any conduit that carries telecommunications services. The term is borrowed directly from an older civil engineering tradition of building and maintaining water, gas, and sewage lines. In the context of telecommunications, a small pipe is one with very limited capacity (e.g. 28 Kb/s), and a huge pipe is one with very large capacity (e.g. 9.953 Gb/s).

tubes that carry heated water from solar collectors to hot water tanks.

Piperazine-N,N'-bis-(2-ethanesulfonic acid); buffer for pH range 6.1-7.5.

see Private investment in public equities.

An acronym for “private investing in public equities.” See Private placement.

Acronym for private investments in public entities. Investments typically made by funds following Regulation D investment strategy.

Pipes is a fictional character in the Transformers Universe.

Exhaust System

The physical infrastructure that delivers broadband to an end user.

a wind instrument; the player blows air into a bag and squeezes it out through pipes

Program on International Politics, Economics, and Security