Contains information on product uses of TV picture tubes and other cathode-ray tubes. Includes an analysis of the basic factors affecting trends in consumption, production and trade of TV picture tubes and other cathode-ray tubes, as well as those bearing on the competitiveness of the industry in domestic and foreign markets. Charts and tables.

While so many books on technology look at new advances and digital technologies, The Routledge Companion to Media Technology and Obsolescence looks back at analog technologies that are disappearing, considering their demise and what it says about media history, pop culture, and the nature of nostalgia. From card catalogs and typewriters to stock tickers and cathode ray tubes, contributors examine the legacy of analog technologies, including those, like vinyl records, that may be experiencing a resurgency. Each essay includes a brief history of the technology leading up to its peak, an analysis of the reasons for its decline, and a discussion of its influence on newer technologies.

This book gives an overview of modern cathodes and electron emitters for vacuum tubes and vacuum electron devices in general. It covers the latest developments in field emission theory as well as new methods towards improving thermionic and cold cathodes. It addresses thermionic cathodes, such as oxide cathodes, impregnated and scandate cathodes, as well as photocathodes and field emitters – the latter comprising carbon nanotubes, graphene and Spindt-type emitter arrays. Despite the rise and fall of the once dominant types of vacuum tubes, such as radio valves and cathode ray tubes, cathodes are continually being improved upon as new applications with increased demands arise, for example in electron beam lithography, high-power and high-frequency microwave tubes, terahertz imaging and electron sources for accelerators. Written by 17 experts in the field, the book presents the latest developments in cathodes needed for these applications, discussing the state of the art and addressing future trends.