نتایج جستجو برای: optical storage
تعداد نتایج: 446463 فیلتر نتایج به سال:
The University Grants Committee and the Computer Board have funded 139 projects in Bntish Umversities as part of their Computers in Teaching Initiative. Two projects have been accepted m archaeology, a joint Southampton/York project on simulating an excavation and an mvestigation at Leicester into the use of interactive videodiscs for teaching archaeology to undergraduates. This paper introduce...
The principles of optical fiber communication and optical data storage have evolved over the past decade into industry standards for transmission, distribution, storage, and archival of digital audio, multimedia, and computer data. The fundamentals of these sophisticated systems are traditionally taught in the lecture hall, and laboratory exposure to the hardware is at the device rather than th...
Colossal Storage has invented new ways of non contact reading and writing with non destructive reading of information to a ferroelectric molecule.
in this thesis, structural, electronical, and optical properties of inverse pervskite(ca3pbo) in cubic phase have been investigated.the calculation have been done based on density functional theory and according to generalized gradiant approximate (gga) as correlating potential. in order to calculate the configurations, implementing in the wien2k code have been used from 2013 version. first of ...
In this research we measure some of the optical parameters of Barium Titanate crystal (BaTiO3), such as signal beam gain, coupling constant (exponential gain coefficient), change in index refraction and photorefractive sensitivity, which are very significant for optical data storage. In all experiment, two- wave mixing configuration at 632.8 nm (He- Ne laser) were used. Experimental data f...
چکیده ندارد.
In this paper, we review many of the technical issues that must be addressed in developing high-quality optical disk recording media. The geometric design of tracking grooves and embossed data on the disk substrate must be optimized to the characteristics of the optical drive to support robust data seeking, track following, and data addressing. To ensure adequate recording performance and drive...
The distribution of audio information in disk format—sound stored as modulations in a flat surface—has had a long and successful track record. At first, analog signals were imprinted on shellac and then later vinyl platters. But recently, sound has been almost exclusively distributed as and replayed from digitally encoded data, molded into the surface of compact polymer disks. This migration wa...
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