ABSTRACT
In this chapter we look at the various magnetic methods available for recording of information, images and sound. The most important of the recording media today are magnetic disks which provide the main method for storing information on computers, and magnetic tapes which are widely used for both audio and video recording. Magnetic recording can be conveniently separated into two groups of related technologies: media and recording heads. ‘Media’ consists of all technologies concerned with the production and use of magnetic disks and tapes for storing information, while ‘heads’ covers all technologies concerned with the processes of writing information on media, or reading information from media.
