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Modern Developments in Vacuum Electron Sources
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.
Glow-Worthy
Today, we’re dealing with high stress levels, anxiety, and a deep sense that something is missing from our overly technologized lives. We long for community, spiritual authenticity, and a feeling of belonging in the body. You are not alone, and you are not permanently stuck. Glow-Worthy’s powerful framework combining modern science and wisdom from global spiritual traditions will help you live a fuller, more authentic life—no matter your background or faith. It’s possible to live from a place of deep connection to something that is far sweeter, far more powerful, and far wiser than you ever knew. To feel aligned in your mind and heart with a sense of purpose that resonates all the wa...
The Cumulative Book Index
A world list of books in the English language.
Current Catalog
First multi-year cumulation covers six years: 1965-70.
Wolfram's "Willehalm"
Wolfram von Eschenbach's Willehalm (c. 1210-20) is one of the great epic creations of the Middle Ages. Its account of conflict between Christian and Muslim cultures, centering on the warrior-saint Willehalm and his wife Gyburc, a convert from Islam, challenges the ideology of the Crusades. It celebrates the heroism, faith, and family solidarity of the Christians, but also displays the suffering of both sides in the war and questions the justification of all killing. Gyburc, whose abandonment of her Muslim family and conversion to Christianity are the immediate cause of the war, bears a double burden of sorrow, and it is from her that springs a vision of humanity transcending religious differ...
Grundzüge der Chemie für Ingenieure
Dieser Buchtitel ist Teil des Digitalisierungsprojekts Springer Book Archives mit Publikationen, die seit den Anfängen des Verlags von 1842 erschienen sind. Der Verlag stellt mit diesem Archiv Quellen für die historische wie auch die disziplingeschichtliche Forschung zur Verfügung, die jeweils im historischen Kontext betrachtet werden müssen. Dieser Titel erschien in der Zeit vor 1945 und wird daher in seiner zeittypischen politisch-ideologischen Ausrichtung vom Verlag nicht beworben.
