Author: Andrew Blum
Publisher: Harper Collins
ISBN: 0062096753
Format: PDF, Docs
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“Andrew Blum plunges into the unseen but real ether of the Internet in a journey both compelling and profound….You will never open an email in quite the same way again.” —Tom Vanderbilt, New York Times bestselling author of Traffic In Tubes, Andrew Blum, a correspondent at Wired magazine, takes us on an engaging, utterly fascinating tour behind the scenes of our everyday lives and reveals the dark beating heart of the Internet itself. A remarkable journey through the brave new technological world we live in, Tubes is to the early twenty-first century what Soul of a New Machine—Tracy Kidder’s classic story of the creation of a new computer—was to the late twentieth.


Author: Alfred Gray
Publisher: Birkhäuser
ISBN: 3034879660
Format: PDF, ePub, Docs
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This book expresses the full understanding of Weyl's formula for the volume of a tube, its roots and its implications. Historical notes and Mathematica drawings have been added to this revised second edition. From the reviews: "Will do much to make Weyl's tube formula more accessible to modern readers.... A high point is the presentation of estimates for the volumes of tubes in ambient Riemannian manifolds whose curvature is bounded above or below." --BULLETIN OF THE AMS

Tubes Sheets and Singularities in Fluid Dynamics

Author: K. Bajer
Publisher: Springer Science & Business Media
ISBN: 030648420X
Format: PDF, Kindle
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Modern experiments and numerical simulations show that the long-known coherent structures in turbulence take the form of elongated vortex tubes and vortex sheets. The evolution of vortex tubes may result in spiral structures which can be associated with the spectral power laws of turbulence. The mutual stretching of skewed vortex tubes, when they are close to each other, causes rapid growth of vorticity. Whether this process may or may not lead to a finite-time singularity is one of the famous open problems of fluid dynamics. This book contains the proceedings of the NATO ARW and IUTAM Symposium held in Zakopane, Poland, 2-7 September 2001. The papers presented, carefully reviewed by the International Scientific Committee, cover various aspects of the dynamics of vortex tubes and sheets and of their analogues in magnetohydrodynamics and in quantum turbulence. The book should be a useful reference for all researchers and students of modern fluid dynamics.

A Parent s Guide to Ear Tubes

Author: Richard M. Rosenfeld
Publisher: PMPH-USA
ISBN: 9781550093216
Format: PDF, ePub, Docs
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Ear tubes are inserted in more than 10,000 children every week in the United States. Written by an international authority on otitis media (middle ear problems), A Parent's Guide to Ear Tubes will help you decide if your child needs ear tubes and how to benefit most if ear tubes are placed. The book addresses, in a straightforward manner, the ......

History of Electron Tubes

Author: Sōgo Okamura
Publisher: IOS Press
ISBN: 9789051991451
Format: PDF, ePub, Mobi
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Almost 90 years have passed since the invention of the thermionic electron valve in 1904 by Sir John Ambrose Fleming. During this period, the development of electron tubes created the so called Electroni Age. Electron tubes played the leading role in the electronic equipments until the middle of the 1950s when solid state devices such as transistors and integrated circuits replaced electron tubes in various applications and accelerated the electronic age.

Electronic Components Tubes and Transistors

Author: G. W. A. Dummer
Publisher: Elsevier
ISBN: 1483138100
Format: PDF
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Electronic Components, Tubes and Transistors is intended to bridge the gap between the basic measurement theory of resistance, capacitance, and inductance and the practical application of electronic components in equipments. The more practical or usage aspect of electron tubes and semiconductors is given emphasis over theory. The essential characteristics of each main type of component, tube, and transistor are summarized. This book is comprised of six chapters and begins with a discussion on the essential characteristics in terms of the parameters usually required in choosing a resistor, including size, temperature, linearity, and tolerances. The next chapter focuses on the electrical properties of fixed and variable capacitors such as impregnated-paper capacitors, metallized paper capacitors, and mica-dielectric capacitors. Subsequent chapters deal with magnetic materials and devices; electromagnetic components such as relays and switches; electron tubes and devices; and transistors and semiconductors. This monograph will be a valuable resource for students in choosing the right component and device for a particular application.