Every night, astronomers use a new generation of giant telescopes at observatories around the world to study phenomena at the forefront of science. By focusing on the history of the Gemini Observatory--twin 8-meter telescopes located on mountain peaks in Hawaii and Chile--Giant Telescopes tells the story behind the planning and construction of modern scientific tools, offering a detailed view of the technological and political transformation of astronomy in the postwar era.
Drawing on interviews with participants and archival documents, W. Patrick McCray describes the ambitions and machinations of prominent astronomers, engineers, funding patrons, and politicians in their effort to construct a modern facility for cutting-edge science--and to establish a model for international cooperation in the coming era of "megascience." His account details the technological, institutional, cultural, and financial challenges that scientists faced while planning and building a new generation of giant telescopes. Besides exploring how and why scientists embraced the promise and potential of new technologies, he considers how these new tools affected what it means to be an astronomer. McCray's book should interest anyone who desires a deeper understanding of the science, technology, and politics behind finding our place in the universe.
Table of Contents:
Introduction: Beautiful and Cantankerous Instruments
1. Leo and Jesse's Changing World 2. Tradition and Balance 3. Visions of Grandeur 4. Paper Telescopes 5. Growing Pains 6. Astropolitics 7. Smoke and Mirrors 8. Joining the 8-Meter Club 9. Point-and-Click Astronomy
Conclusion: Telescopes, Postwar Science, and the Next Big Machine
Giant Telescopes Sources Abbreviations Notes Acknowledgments Index
This vivid history of modern telescope building focuses on the turbulence, tension and triumph of building the Gemini 8-meter telescopes. Strong personalities, scientific opportunities, technological advances, and institutional rivalries are sharply etched and skillfully illuminated by McCray's deep reading of the record. As astronomers plunge headfirst into the next round of giant telescope building, this book should be on the required reading list. --Robert P. Kirshner, author of The Extravagant Universe: Exploding Stars, Dark Energy, and the Accelerating Cosmos
Hand-based biometrics identifies users by unique features in their hands, such as fingerprints, palmprints, hand geometry, and finger and palm vein patterns. This book explores the range of technologies and methods under development and in use for hand-based biometrics, with evaluations of the advantages and performance of each. The inclusion of significant material on the relevant aspects of the physiology of the hand is a particularly useful and innovative feature.
Topics covered in this book include inner and outer hand physiology and diseases; nail structure and common disorders; fingerprint recognition; synthetic fingerprints; finger vein recognition; palm vein biometrics; hand shape recognition and palm print recognition; 3D hand shape recognition; and spoofing and anti-spoofing methods.
With contributions from an international panel of experts in this field, Hand-Based Biometrics is essential reading for researchers, students and engineers working in biometrics and security.
Wireless Power Transfer (WPT) enables power to be transferred from a grid or storage unit to a device without the need for cable connections. This can be performed by inductive coupling of magnetic fields as well as by direct radiative transfer via beams of electromagnetic waves, commonly radiowaves, microwaves or lasers. Inductive coupling is the most widely used wireless technology with applications including charging handheld devices, RFID tags, chargers for implantable medical devices, and proposed systems for charging electric vehicles. Applications of radiative power transfer include solar power satellites and wireless powered drone aircraft.
This book covers the very latest in theory and technology of both coupling and radiative wireless power transfer. Topics covered include the basic theory of inductive coupling and resonance coupling WPT; multi-hop WPT; circuit theory for wireless couplers; inverter/ rectifier technologies for WPT systems; basic theory of WPT via radio waves; technologies of antenna and phased array for WPT via radio waves; transmitter/rectifier technologies for WPT via radio waves; applications of coupling WPT for electric vehicle charging; applications of long-distance WPT; and biological interactions of electromagnetic fields and waves.