A wound is an object around which lengths of another material (usually long and flexible) are wound for storage. Generally a reel has a cylindrical core and walls on the sides to retain the material wound around the core. In some cases the core is hollow, yet other items may be mounted on it, and grips may exist for mechanically turning the reel.
The size of the core is dependent on several factors. A smaller core would be more likely to be stored in a given space. However, there is a limit to how tightly the stored material can be wound.
Other issues affecting the core size include:
- Mechanical strength of the core (especially with large reels)
- Acceptable turning speed (for a given rate of change in the real world)
- any functional requirements of the core
- For a reel that must be mechanically turned the size of the grips that mount it on the mechanical turning device.
- The size of the mountings needed to support the core during unwinding.
- Anything mounted on the cores (eg, the socket is an actual extension )
Such material is a photographic film that is relatively long and is relatively wide, the material is stored in successive single layers. In cases where the material is more uniform in cross-section (for example, a cable), the material may be wound up to a greater extent than its width. In this case, several windings are needed to create a layer on the reel.
- A real fishing is fishing rod was used to wind the fishing line up
- Many audio recordings of the late 20th century (and some today) use reel-to-reel magnetic tape
- Kite lines are frequently operated from real
- Specialized reels for holding tow line for glider hang, glider, and sailplane launching
- Laying of communications
- Winches wind cables on reels
- Webbing barriers that allow mobile post positions collect tensionally excess webbing
- Tow trucks hold steel cable on reels
- Garden hoses reeled hose kink problems
- Rope , wire and electrical cable is often supplied on reels
- Badge reels are used to hold badges , ski passes and the like
- A cave diving reel is safety equipment used for running a guideline (also known as a distance line ) 
Motion picture terminology
A so-called “two-reeler” would have run about 15-24 minutes since the movie was shipped. Most modern projectionists use the term “reel” when referring to a 2,000-foot (610 m) “two-reeler”, as a modern film is shipped by single 1,000-foot (305 m) reels. A Hollywood standard movie about 2000-foot real reels in length.
The “reel” was established as a standard measurement because of considerations in motion picture motion picture and film (for the film box) and for the size of the physical film attached to the motion picture projector. Had it not been standardized (at 1,000 ft or 305 m of 35 mm film) there would have been many difficulties in the manufacture of the related equipment. A 16 mm “real” is 400 feet (122 m). It runs, at sound speed, the same amount of time (11-12 minutes) as a 1,000-foot (305 m) 35 mm reel.
A “split reel” is a motion picture film reel in two halves that, when assembled, has a specific length of motion picture film that has been wound on a plastic core. Using a split reel allows film to be shipped or handled in a smaller and smaller form than film would have a “fixed” reel. In silent movie terminology, two movies on one reel.
As digital cinema catches it, the real physical is being white Replaced by a virtual screen called Expired Digital Cinema Package , qui peut être distributed using Any storage media (Such As hard drives) or data transfer medium (Such As the Internet Satellite or links) and projected using a digital projector instead of a conventional movie projector.
Actors may submit a draft of their work to prospective employers, often in real reel format.
- Jump up^ Devos, Fred; The Maillot, Chris; Riordan, Daniel (2004). “Introduction to Guideline Procedures Part 1: Equipment” (PDF) . DIRquest . Global Underwater Explorers . 5 (3) . Retrieved 2009-04-05 .
- Jump up^ Journal of the Society of Motion Picture Engineers, Volume 26. Ed. Society of Motion Picture Engineers, 1936. P. 93
- Jump up^ Kawin, Bruce F. (1987). How Movies Work . University of California Press . p. 46. ISBN 9780520076969 .