Magnetic recording: the first 100 years"The first magnetic recording device was demonstrated and patented by the Danish inventor Valdemar Poulsen in 1898. Poulsen made a magnetic recording of his voice on a length of piano wire. MAGNETIC RECORDING traces the development of the watershed products and the technical breakthroughs in magnetic recording that took place during the century from Paulsen's experiment to today's ubiquitous audio, video, and data recording technologies including tape recorders, video cassette recorders, and computer hard drives. An international author team brings a unique perspective, drawn from professional experience, to the history of magnetic recording applications. Their key insights shed light on how magnetic recording triumphed over all competing technologies and revolutionized the music, radio, television and computer industries. They also show how these developments offer opportunities for applications in the future. MAGNETIC RECORDING features 116 illustrations, including 92 photographs of historic magnetic recording machines and their inventors." Sponsored by: IEEE Magnetics Society |
From inside the book
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Page 66
Coincidentally, BASF had begun producing tetrahydrofuran (THF), which Robl
discovered could serve as a solvent in the PVC coating process. Unlike the
manufacture of Type C tape, in which base film production and coating occurred
in one ...
Coincidentally, BASF had begun producing tetrahydrofuran (THF), which Robl
discovered could serve as a solvent in the PVC coating process. Unlike the
manufacture of Type C tape, in which base film production and coating occurred
in one ...
Page 128
a chemistry-based analog recording system, makes use of the photosensitivity of
silver halide particles that have been coated in a thin layer on a plastic film. When
these particles are exposed to light rays that have been imaged on them ...
a chemistry-based analog recording system, makes use of the photosensitivity of
silver halide particles that have been coated in a thin layer on a plastic film. When
these particles are exposed to light rays that have been imaged on them ...
Page 290
Thin-Film Heads The thin-film head, introduced 1979 in the 3370, represented a
major advance over the magnetic heads of earlier disk drives. The development
of the film head provided an improvement in areal density potential.
Thin-Film Heads The thin-film head, introduced 1979 in the 3370, represented a
major advance over the magnetic heads of earlier disk drives. The development
of the film head provided an improvement in areal density potential.
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Contents
AUDIO RECORDING | 6 |
The Telegraphone | 15 |
Steel Tape and Wire Recorders | 30 |
Copyright | |
19 other sections not shown
Other editions - View all
Magnetic Recording: The First 100 Years Eric D. Daniel,C. Denis Mee,Mark H. Clark Limited preview - 1998 |
Common terms and phrases
ac bias Ampex analog applications areal density b/in bandwidth BASF bit density broadcast Brush capacity capstan cartridge coating color compact cassette consumer cost Courtesy of IBM data rate data recording data storage device diameter digital recording digital video recording disk drive disk surface diskette early electronic engineers equipment error ferrite Figure film frequency hard disk helical-scan improved inches industry instrumentation recorder Jack Mullin laboratory Ludwigshafen machine magnetic disk magnetic drum magnetic recording magnetic tape Magnetophon manufacturers mechanism memory Model modulation operation oxide Panasonic particles patent performance personal computer phonograph playback Poulsen prerecorded production quadruplex radio read/write recording format recording medium recording system recording technology reel rotating slider SMPTE Sony sound standard stored t/in tape drive tape speed tape systems Telegraphone telephone television tion track density United video cassette recorder video signal video tape recorder