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RT3865_half title 9/21/04 3:53 PM Page 1
ENCYCLOPEDIA OF 20TH-CENTURY
RT3865_vol 1 9/22/04 11:23 AM Page 1
ROUTLEDGE
NEW YORK AND LONDON
ENCYCLOPEDIA OF 20TH-CENTURY
Volume 1
A–L
Colin A. Hemp...
Published in 2005 by
Routledge
270 Madison Avenue
New York, NY 10016
www.routledge-ny.com
Published in Great Britain by
Ro...
Advisers
Dr. Jon Agar, Department of History and
Philosophy of Science, University of
Cambridge
Professor Janet Bainbridge...
Contents
Advisers v
List of Entries ix
Thematic List of Entries xv
Editor’s Preface xxi
Associate Editor’s Preface xxiii
A...
ix
List of Entries
Volume One
Absorbent Materials
Activated Carbon
Adhesives
Agriculture and Food
Air Conditioning
Air Tra...
Combinatorial Chemistry
Communications
Composite Materials
Computer and Video Games
Computer Displays
Computer Memory, Ear...
Hormone Therapy
Hovercraft, Hydrofoils, and Hydroplanes
Hydroelectric Power Generation
Iconoscope
Immunological Technology...
Radio: AM, FM, Analog, and Digital
Radio, Early Transmissions
Radio Receivers, Coherers and Magnetic Methods
Radio Receive...
Ultracentrifuges
Ultrasonography in Medicine
Urban Transportation
Vacuum Tubes/Valves
Vertical Transportation
Vitamins, Is...
Thematic List of Entries
Biotechnology
Antibacterial Chemotherapy
Artificial Insemination and in Vitro Fertilization
Biopol...
Printers
Processors for Computers
Prospecting, Minerals
Radionavigation
Software Application Programs
Software Engineering...
Agriculture and Food
Crop Protection, Spraying
Dairy Farming
Farming, Agricultural Methods
Farming, Growth Promotion
Farmi...
Nuclear Fuels
Nuclear Reactor Materials
Nuclear Waste Processing and Storage
Optical Materials
Plastics, Thermoplastics
Pl...
Automobiles, Hybrid
Automobiles, Internal Combustion
Catamarans
Civil Aircraft, Jet Driven
Civil Aircraft, Propeller Drive...
Editor’s Preface
All editors of encyclopedias are faced with the
problem of what to include. Even if the title is
agreed a...
xxii
Associate Editor’s Preface
Technology is a vital subject. It grows continu-
ously. New technologies are introduced, existi...
Acknowledgments
A host of workers and authors contributed to this
encyclopedia, and I wish to extend my thanks to
every pe...
Contributors
W.A. Addis, Buro Happold, Middlesex, United
Kingdom.
Aaron Alcorn, Cleveland Heights, Ohio, USA.
K.W. Allen, ...
Rodney P. Carlisle, History Associates
Incorporated, Rockville, Maryland, USA.
Ste´ phane Castonguay, De´ partement des sc...
Klaus Hentschel, Institut fu¨ r Philosophie,
University of Berne, Switzerland.
Arne Hessenbruch, Dibner Institute, Massach...
Caryn E. Neumann, Department of History, The
Ohio State University, USA.
William O’Neil, CNA Corporation, Alexandria,
Virg...
Eric v.d. Luft, Historical Collections, Health
Sciences Library, State University of New York
Upstate Medical University, ...
A
Absorbent Materials
For thousands of years, plant-derived materials
have served as the primary ingredient of absorbent
m...
While able to absorb 30 percent of its weight, it
would also expel liquid readily when squeezed,
making it an unattractive...
tampons, disposable diapers, and sanitary napkins
is still largely reserved for developed countries.
However, as more inno...
place at 800–900
C with steam or carbon dioxide.
Powdered activated carbon is suitable for liquid
and flue gas applications...
If the forces of adhesion are to be effective,
intimate contact must be established between two
components, one of them a l...
Silicones. Silicones, generally silicone (or silox-
ane) rubbers, are largely used as sealants that
combine adhesion with ...
Agriculture and Food
In late-twentieth century Western societies, food
was available in abundance. Shops and super-
market...
science to agricultural development. The two
disciplines with the largest impact were chemistry
and biology. The name atta...
exploit commercially. Farmers can easily put aside
part of the harvest as seed for the next season.
Public institutes for ...
based on multivariate statistics, developed by the
British mathematician Karl Fisher, are the major
tool in turning result...
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Encyclopedia of 20th century technology
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Encyclopedia of 20th century technology
Encyclopedia of 20th century technology
Encyclopedia of 20th century technology
Encyclopedia of 20th century technology
Encyclopedia of 20th century technology
Encyclopedia of 20th century technology
Encyclopedia of 20th century technology
Encyclopedia of 20th century technology
Encyclopedia of 20th century technology
Encyclopedia of 20th century technology
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