About: Disk read-and-write head

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Disk read/write heads are the small parts of a disk drive which move above the disk platter and transform the platter's magnetic field into electrical current (read the disk) or, vice versa, transform electrical current into magnetic field (write the disk). The heads have gone through a number of changes over the years.

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rdf:type	Thing place
rdfs:label	Disk read-and-write head (en)
rdfs:comment	Disk read/write heads are the small parts of a disk drive which move above the disk platter and transform the platter's magnetic field into electrical current (read the disk) or, vice versa, transform electrical current into magnetic field (write the disk). The heads have gone through a number of changes over the years. (en)
sameAs	Disk read-and-write head Disk read-and-write head
dbp:wikiPageUsesTemplate	dbt:Authority_control dbt:Commons_category dbt:Further dbt:More_citations_needed dbt:Reflist dbt:Short_description
Subject	Hard disk computer storage Rotating disc computer storage media Magnetic devices Computer storage devices
Link from a Wikipa... related subject.	dbpedia-it:Disco_rigido
thumbnail	wiki-commons:Special:FilePath/Seagate_ST33232A_hard_disk_head_and_platters_detail.jpg?width=300
foaf:depiction
gold:hypernym	Parts
prov:wasDerivedFrom	http://en.wikipedia.org/wiki/Disk_read-and-write_head?oldid=1073007861&ns=0
Wikipage page ID	67310 (xsd:integer)
page length (characters) of wiki page	10205 (xsd:nonNegativeInteger)
Wikipage revision ID	1073007861 (xsd:integer)
Link from a Wikipage to another Wikipage	Fluid bearing Flying height Magnetic core Magnetic field Magnetoresistance Hard disk computer storage Areal density (computer storage) Tunnel magnetoresistance Rotating disc computer storage media Geometry Giant magnetoresistance Magnetic devices Disk storage History of IBM magnetic disk drives Metal Nanometre Physics Seagate Technology Photolithography Colossal magnetoresistance Electric current Consumer electronics Permalloy Perpendicular recording Ferrite (magnet) Head crash Saturation (magnetic) Transducer Tape recorder Thin-film solar cell Computer storage devices
has abstract	Disk read/write heads are the small parts of a disk drive which move above the disk platter and transform the platter's magnetic field into electrical current (read the disk) or, vice versa, transform electrical current into magnetic field (write the disk). The heads have gone through a number of changes over the years. In a hard drive, the heads 'fly' above the disk surface with clearance of as little as 3 nanometres. The "flying height" is constantly decreasing to enable higher areal density. The flying height of the head is controlled by the design of an air-bearing etched onto the disk-facing surface of the slider. The role of the air bearing is to maintain the flying height constant as the head moves over the surface of the disk. The air bearings are carefully designed to maintain the same height across the entire platter, despite differing speeds relative to the distance from the center of the platter. If the head hits the disk's surface, a catastrophic head crash can result. (en)
foaf:isPrimaryTopicOf	http://en.wikipedia.org/wiki/Disk_read-and-write_head
is Wikipage redirect of	HDD head Hard disk head Hard drive head Drive head Thin-film head Read-write head Read/write head Thin film head Disk head Disk read-and-write heads Disk read-write head Disk read/write head Disk read and write heads
is Link from a Wikipage to another Wikipage of	Floppy-disk controller Flying height Logical Disk Manager Magnetic storage NHK Spring Company Field magnet Active hard-drive protection Address space Amiga Disk File Amiga support and maintenance software Bernoulli Box Monrobot XI Disk buffer Disk controller Disk pack Disk storage Drum memory History of IBM History of IBM magnetic disk drives History of hard disk drives Charles Denis Mee Click of death Cylinder-head-sector Defragmentation List of examples of lengths

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