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A 16 mm "reel" is 400 feet (122 m). It runs, at sound speed, approximately 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, hold a specific length of motion picture film that has been wound on a plastic core.
The first commonly available increase in tape length resulted from a reduction in backing thickness from 1.5 to 1.0 mil (38 to 25 μm) resulting in a total thickness reduction from 42 to 35 μm (1.7 to 1.4 mils), which allowed 3,600 ft (1,100 m), 1,800 ft (550 m), and 900 ft (270 m) tapes to fit on ten-and-a-half-, seven-, and five-inch reels respectively.
To further enhance readability, small brass tags were affixed at five-foot intervals, each bearing a number indicating the total number of feet to that point. [15] While this technique was not patented, Justus Roe and Sons popularized this design in their "Roe Electric Reel Tape Measures" during the late 19th and early 20th centuries.
A reel-to-reel tape recorder (Sony TC-630), typical of a 1970s audiophile device. Reel-to-reel audio tape recording, also called open-reel recording, is magnetic tape audio recording in which the recording tape is spooled between reels. To prepare for use, the supply reel (or feed reel) containing the tape is placed on a spindle or hub.
Akai model VTS-100 was introduced in 1967 and was a B&W portable VTR with a one tube camera. The next models, VTS-110 and VTS-120, had similar specifications: S/N > 40 dB; Playback: about 200-lines of image resolution; Capstan Tape speed (EIA) 11.25 inches per second (20 minute reel) / (CCIR) 23.85 cm/s (24 minute reel) VTR Weight: 11 lb.
The tape is 1 ⁄ 4 in (6.4 mm) wide and is played at 1 + 7 ⁄ 8 in (48 mm) per second. [2] The cartridge consists of a reel-to-reel mechanism intended for playback only. Internally, the cartridge contains two 8 + 3 ⁄ 8 in (210 mm) tape reels, tape guides, rollers, and a reel brake. The reels are stacked on top of each other vertically and ...
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