(cid:1) VAN NOSTRAND’S SCIENTIFIC ENCYCLOPEDIA Tenth Edition VOLUME 1 Glenn D. Considine Editor-in-Chief Peter H. Kulik Associate Editor (cid:1) (cid:1) A John Wiley & Sons, Inc., Publication (cid:1) (cid:1) VAN NOSTRAND’S SCIENTIFIC ENCYCLOPEDIA Tenth Edition VOLUME 1 (cid:1) (cid:1) (cid:1) (cid:1) VAN NOSTRAND’S SCIENTIFIC ENCYCLOPEDIA Tenth Edition VOLUME 1 Glenn D. Considine Editor-in-Chief Peter H. Kulik Associate Editor (cid:1) (cid:1) A John Wiley & Sons, Inc., Publication (cid:1) (cid:1) (cid:1) Copyright2008byJohnWiley&Sons,Inc.Allrightsreserved. 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Q121.V32008 503–dc22 2007046658 PrintedintheUnitedStatesofAmerica 10987654321 (cid:1) (cid:1) PREFACE Theeditors are pleasedto introduceVanNostrand’sScientificEncyclope- of many influential scientists including many Nobel Prize winners in dia,TenthEdition,thusbuildinguponthelongtraditionofexcellencethat Medicine,Chemistry,andPhysics;ahistoryoftheirtimesisnotcomplete dates back some seventy years to the First Edition, published in 1938 as withoutmentionoftheirworks.Scienceishistory. a single volume over 1,200 pages and updated over the decades in one A statistical summary of the Tenth Edition would include more than volume (1947,1958,1968,1976,1983),and then in two volumes(1989, 10,000 entries and 9,500 cross-references; 4,800 diagrams, graphs, and 1995,2002).This Tenth Edition, in responseto exponentialgrowth, both photographs;morethan600tables;andanalphabeticalIndexofmorethan inscientificknowledgeandintheelectronicavailabilityofthatknowledge, 100printedpagesthatfindsfewrivalsintherealmoftechnicalliterature. hasgrownperforcetothreevolumesover6,100pages. Thesearelargeincreases,staggeringparticularlyinthenumberofentries, The essence of VNSE is enduring, and it remains a fine, concise, and they are the result of an exhaustive, ongoing selection process for comprehensive,andaccessiblegeneralsciencework.Itsintellectualscope content perhaps best described so presciently by Douglas Considine in ranges from the introductory to the highly technical in a vast and the Preface to the Sixth Edition in 1983: “Obviously,an encyclopediaof ever-expanding array of topical coverage in the sciences, engineering, thistypecannotservethesamepurposeasanewsmedium.Science,too, mathematics, medicine, and more. As has long been the case, the has its own noise level.This is particularly evidentfrom the hundredsof editors have designed the book to be approachable by students of many prematurelyannouncedandexaggeratedclaimsonefrequentlyfindsinthe ages. An important feature continued in this work, therefore, is the general communications media. Consequently, the authors and editors of progressive development of the discussion of each topic, beginning with this encyclopediamustcarefully sift through the vastscientific data bank a simple definition expressed in plain terms, developing into a more andsortoutthetriviafromrealprogress...thereisnoroomforrumorand detailedtreatment,andaugmentedbyoften-extensiveAdditionalReading theuntriedandverylittleroomindeedforthecontroversialinapermanent suggestions. Contemporary readers can continue to turn to VNSE for information scientificreferencesuchasthis.”Towhichthepresenteditorssay,Amen. abouthowtheirdailylives areincreasinglyaffectedbythesophistication Buteventhestrictestselectioncriteria,appliedtothegargantuangrowthof of today’s science and the complexity of modern technology. They will knowledge,leadinevitablytotheparadoxthatinprint,whatisnewtoday beremindedthatknowledgeanddiscoveryexistinacontinuum,andthat willbe,ifnotobsolete,atleastinneedofimmediateupdatingtomorrow. often,butnotalways,whatisnewdependsentirelyonwhatcamebefore. To that end the editors have included thousands of Internet references to Asouresteemed,lateeditorofmorethan30years,DouglasM.Considine, fostercontemporaneityinresearchandAdditionalReading.Andfurtherto waswonttosay,“Scienceishistory”.Withthatmantrainmind,andnoting thatend,theeditorshaveawonderfulannouncement. thatithasalreadybeensixyearssincetheNinthEditionin2002,itistime VanNostrand’sScientificEncyclopedia,TenthEdition,isnowavailable toexaminethisnewedition. ontheInternetthroughtheWileyIntersciencewebsite.Theonlineversion The five major changes noted in the Preface to the Ninth Edition are usesembeddedInternetreferencesashyperlinksbothwithinthebookitself (cid:1) (cid:1) still very much a part of the book and are likely to remain so. First, and without—to the greater online community and also to other titles the way that the editors wrote, gathered and assembled articles for this owned by John Wiley and Sons. At the click of a mouse the student book is almost entirely electronic—from query letters to individuals or reader can now navigate VNSE instantly; this reflects how modern or to academic, industrial or technical societies or entities; to primary students actually pursue knowledge, and their parents are not far behind. research for new entries and updates for mature ones, now conducted Thepossibilitiesforreadyacquisitionoftopicalknowledgein,simplyput, almost entirely on the Internet; to communication between editor and what is known,thus grow logarithmically through the interconnectedness publisher and the transmission of text between them in the partnership oftheVNSEanditslinkstothecyberworld.Theeditorsfeelstronglythat, thatresultsinthebookitself.Second,themushroomingAgeofDiscovery while there will always be an important place for printed literature of all is still very much with us and is reflected in updates to articles and kinds,asevidencedbythebeautifulvolumesathand,therealmofscientific familiesofarticles,withspecialemphasisonthemanylifesciences,space knowledge, compelled by the ongoing effects of that knowledge itself as science, and computer technology, and much, much more, necessitating expressed through information technology, will be accessed increasingly the expansion to a third volume. Third, the use of Internet references as viaelectronicmeans. Additional Reading suggestions, a groundbreaking feature of the Ninth Inclosing,onetruststhatthereaderwillindulgeapersonalobservation. edition, has been retained and expanded; even print articles are often In1976attheageof61,DouglasM.ConsidinewroteandeditedtheFifth archived electronically by magazines and journals and thus the quest for Edition of VNSE. In 2008 at a similar age, his son Glenn D. Considine, additionalmaterialisincreasinglyelectronicinnature,withreadershaving also a writer and editor, presents the Tenth Edition of VNSE. Science is the advantage of much of the culling of thousands of “hits” on a given topic having been done for them by the editors. Fourth, the editors have history. Family is history, too. Thus, this book is dedicated with abiding inculcatedthepreviouslynewfeatureofTimeLinesandGlossaries,toadd affectionandgratitudetoDouglasM.Considine. at-a-glanceinformationandhistoricalperspective,intoastapleofthebook; newcoverageincludesvirology,physiology,pharmaceuticals,theInternet, weather technology, and more. And fifth, the sense of history is further GLENND.CONSIDINE,Editor developed by expansion of another once-new feature, brief biographies PETER H.KULIK,AssociateEditor v (cid:1) (cid:1) REPRESENTATIVE TOPICAL COVERAGE ANIMAL LIFE Amphibians Coelenterates Mammals Protozoa Annelida Echinoderms Mesozoa Reptiles Arthropods Fishes Mollusks Rotifers Birds Insects Paleontology Zoology BIOSCIENCES AminoAcids Biophysics Genetics Proteins Bacteriology Cytology Hormones RecombinantDNA Biochemistry Enzymes Microbiology Viruses Biology Fermentation MolecularBiology Vitamins CHEMISTRY AcidsandBases Corrosion InorganicChemistry Oxidation-Reduction Catalysts Crystals Ions Photochemistry ChemicalElements Electrochemistry MacromolecularScience PhysicalChemistry ColloidSystems FreeRadicals OrganicChemistry SolutionsandSales EARTH AND ATMOSPHERIC SCIENCES Climatology Geodynamics Hydrology Tectonics Ecology Geology Meteorology Seismology Geochemistry Geophysics Oceanography Volcanology ENERGY SOURCES AND POWER TECHNOLOGY Batteries ElectricPower NuclearEnergy SteamGeneration BiomassandWastes GeothermalEnergy OceanEnergyResources TidalEnergy Coal HydroelectricPower Petroleum Turbines Combustion NaturalGas SolarEnergy WindPower (cid:1) MATHEMATICS AND INFORMATION SCIENCES (cid:1) AutomaticControl Computing Measurements Statistics Communications DataProcessing NavigationandGuidance UnitsandStandards MATERIALS AND ENGINEERING SCIENCES ChemicalEngineering LaserTechnology Mining ProcessEngineering CivilEngineering MechanicalEngineering Microelectronics StructuralEngineering GlassandCeramics Metallurgy PlasticsandFibers Transportation MEDICINE, ANATOMY, AND PHYSIOLOGY BrainandNervousSystem GeneticDisorders Ophthalmology CancerandOncology Gerontology Otorhinolaryngology/Dental CardiovascularSystem Hematology Parasitology Chemotherapy Immunology Pharmacology Dermatology InfectiousDiseases ReproductiveSystem Diagnostics KidneyandUrinaryTract RespiratorySystem DigestiveSystem MentalIllness Rheumatology EndocrineSystem MuscularSystem SkeletalSystem PHYSICS AtomsandMolecules Gravitation Optics SubatomicParticles Electricity Magnetism Radiation Surfaces Electronics Mechanics SolidState TheoreticalPhysics FluidState Motion Sound Waves PLANT SCIENCES Agriculture DiseasesandPests GrowthModifiers SeedsandGermPlasm Algae Fruits NutritionalValues Trees Botany Fungi PlantBreeding YeastsandMolds SPACE AND PLANETARY SCIENCES Astrochemistry Astronautics Astrophysics ProbesandSatellites Astrodynamics Astronomy Cosmology SolarSystems vi (cid:1) (cid:1) ACKNOWLEDGMENTS Specialists in all disciplines of the scientific community have contributed in many ways to the preparation of this Tenth Edition of the VanNostrand’s ScientificEncyclopedia.Theirinputs rangedfrom the preparationofmanuscriptson complextopics,thesubmittalofnew dataforthe firsttime, advice andcounseltotheEditorialBoard,theseekingoutofobscureanddiscreteinformation,andthereportingofresearchfindings.Inputsrepresentthoseof scientists,engineers,technologists,locatedworldwide.Inadditiontonumerousacademicinstitutionsandprivateindustries,theeditorsaremuchindebted to numerousgovernmentaldepartments,agencies,andfieldorganizationsfortheircooperation.Ithasalwaysbeeninthebesttradition ofthehistoryof sciencetoshareknowledge.Itisthereforenomerecoincidencethatsomanycontributorsareteachersattheuniversitylevel,fortheynotonlyhavedeep knowledge in their respective fields, but they also can communicate that knowledge effectively. The great improvements to the substance of this book wouldnothavebeenpossiblewithoutthem,andtheeditorshavepreservedtheindividualstylesoftheauthorsinkeepingwiththetraditionofVNSEas aneminentlypersonal,and,onehopes,moreaccessibleworkofgeneralscience.Theeditorsandstaffofthisencyclopediagratefullyacknowledgetheir excellentcooperationandstressthatthefollowingabridgedlistofover650individualsandgroupscouldbemuchlonger. Special appreciation must be extended for the efforts of Michael Ladisch of Purdue University, for his home article on Bioprocess Engineering (Biotechnology).—David Leake of Indiana University, both for his home article on Artificial Intelligence, and for quarterbacking the entire family of twelve AI “sidebar” articles.—The American Meteorological Society for their gracious permission to use numerous articles from the glossary of meteorology.—Ramon A. Mata-Toledo, James Madison University, who reviewed the Computer Sciences and authored several articles.—Joseph Castellano, President and CEO of Stanford Resources, who prepared numerous entries on Flat Panel Display Technology.—Dr. Thomas J. Harrison, who prepared numerous articles on computers and digital technology.—Dr. Steven N. Shore, who authored and arranged several entries dealing with astronomy and related sciences.—Dr. Ann C. DeBaldo, University of South Florida, who prepared numerous entries in the areas of immunology, oncology,andinfectiousdiseases.—Drs.M.L.andW.L.Dilling,whoskillfullysummarizedthecomplexworldoforganicchemistry,itsnomenclature and equations.—Richard Q. Hofacker Jr., who authored articles on microelectronics and telephony and who rendered invaluable assistance toward creatingcomprehensive,yetconcise,inputsconcerningthebroadfieldoftelecommunications.—PeterE.Kraght,whonotonlyauthoredseveralarticles, butwhoalsopreparedthefoundationforotherdescriptionsinthespheresofmeteorologyandclimatology.—ElmerRowley,whomadethecoverageof mineralogy and crystallography in this encyclopedia truly outstanding.—VisionRx, Elmsford, NY., for the numerous entries on Vision and eye related disorders.—Jeanne Maree Iacono, who authored and rendered invaluable assistance toward creating brief biographies on scores of scientists. Without exaggeration,thelistofsuchveryspecialeffortscouldbeextendedbyseveraladditionalparagraphs. NOTE:Inthecasesofrelativelyshortarticles,theauthors’initialsmaybeusedinsteadoftheirfullnames.Inthefollowinglist,anasteriskindicates suchauthors.Forexample:*AmericanMeteorologicalSociety(AMS). R. C. Aalberse, Central Laboratoryof the Blood Transfusion Service of H.R.Arum,Designatronics,Inc.,NewHydePark,NY.http://www.design- the Netherlands Red Cross, Amsterdam, The Netherlands. http://stinet. atronics.com/ (cid:1) (cid:1) dtic.mil/oai/oai?verb=getRecord&metadataPrefix=html&identifier=AD0 P.Auvray,Levallois-Perret-Cedex,France. 727999 J. Bakos,J.H.Fletcher&Company,Huntington,WV.http://www.jhflet- Bernard W. Agranoff, University of Michigan, Ann Arbor, MI. http:// cher.com/ www.biochem.med.umich.edu/biochem/research/profiles/agranoff.html M.S.Baldwin,WestinghouseElectricCorporation,EastPittsburgh,PA. Mark Adams, Fisher Controls International, Inc., Marshalltown, IA. D. Bane, Jet Propulsion Laboratory/California Institute of Technology, http://www.emersonprocess.com/fisher/ Pasadena,CA.http://www.jpl.nasa.gov/index.cfm O.J.Adlhart,EngelhardCorporation,Iselin,NJ.www.engelhard.com GaryA.Bannon,MonsantoCompany,StLouis,MO. H. J. Albert, ParrInstrumentCompany,Moline,IL.http://www.parrinst. GregorBarclay,UniversityoftheWestIndies,StAugustine,Trinidadand com/ Tobago.http://sta.uwi.edu/ P.S.Albright,Wichita,KS. R. Q. Barr, Climax Molybdenum Company, (A subsidiary of the Phelps W. Randall Albury, University of New England, Armidale, New South DodgeCorporation),Phoenix,AZ.http://www.climaxmolybdenum.com/ Wales,Australia.http://www.une.edu.au/ AlanD.T.Barrett,UniversityofTexas,Galveston,TX. R. A. Alfano, City University of New York (CUNY), New York City, NY. Alan J. Barrett, The Babraham Institute, Babraham, Cambridge, UK. http://portal.cuny.edu/portal/site/cuny/index.jsp?front door=true http://www.babraham.ac.uk/ Ulf Alkner, AstraZeneca R&D, Lund, Sweden. http://www.astrazeneca. W.T.Barrett,FooteMineralCompany,Exton,PA. com/ DerrickBaxby,UniversityofLiverpool,UK. K.G.Alle,ImperialCollege,London,UK.http://www3.imperial.ac.uk/ TrudyE.Bell,[email protected]://science.nasa.gov/ D.Allen,NCRCorporation,FortCollins,CO. JamesBellows,WestinghouseElectricCorporation,CranberryTownship, David E. Allen, WellcomeInstitute for the History ofMedicine,London, ButlerCounty,PA.http://www.westinghouse.com/home.html UK.http://www.wellcome.ac.uk/ E.Bendel,McDonnellDouglasCorporation,LongBeach,CA. AmericanForests,Washington,DC.http://www.americanforests.org/ Richard E. Benedick, Pacific Northwest National Laboratory (PNNL), AmericanGasAssociation(The),Washington,DC.http://www.aga.org Richland,WA.http://www.pnl.gov/ *American Meteorological Society, (AMS), Boston, MA. http://www. R. J. Benke, Westinghouse Electric Corporation, Pittsburgh, PA. http:// ametsoc.org/; and http://amsglossary.allenpress.com/glossary/browse? www.westinghouse.com/ s=A&p=1 W.O.Bennett,AmericanTimeProducts,Woodside,NY. Ames Research Center, NationalAeronauticsandSpaceAdministration MichaelJ.Benton,UniversityofBristol,Bristol,UK. MoffettField,CA.http://www.arc.nasa.gov/ Jeremy Berg, National Institute of General Medical Sciences,Bethesda, M.J.Aminoff,UniversityofCalifornia,SanFrancisco,CA. MD.http://www.nigms.nih.gov/ EdwardS.Amis,UniversityofArkansas,Fayetteville,AR. Kathleen L. Berkner,TheClevelandClinicFoundation,Cleveland,OH. R.C.Anderson,JetPropulsionLaboratory,Pasadena,CA.http://www.jpl. http://www.clevelandclinic.org/ nasa.gov/index.cfm M.S.Bernath,Gould,Inc.,Andover,MA. Lorella Angelini, NASA/Goddard Space Flight Center, Greenbelt, MD, RaviBhagavathula,WichitaStateUniversity,Wichita,KS. BeppoSAX(Satellite).http://www.gsfc.nasa.gov/ DeepakBhatnagar,UnitedStatesDepartmentofAgriculture(USDA),New F. Arnold, Kollmorgen Corporation, Northampton, MA. http://www.eo. Orleans,LA. kollmorgen.com/ NeilW.Blackstone,NorthernIllinoisUniversity,DeKalb,IL. vii (cid:1) (cid:1) viii ACKNOWLEDGMENTS J. Blackwell, Department of Macromolecular Science, Case Western Arturo Casadevall, Albert-Einstein College of Medicine, New York, NY. ReserveUniversity,Cleveland,OH. http://www.aecom.yu.edu/home/ J.A.Blaeser,Gould,Inc.,Andover,MA. JosephCastellano,StanfordResources,Inc.,SanJose,CA. SuzanneBoard,Toronto,Ontario,Canada. Centers for Disease Control and Prevention (CDC), Atlanta, GA. Robert E. Bodenheimer, Jr., Georgia Institute of Technology, Atlanta, http://www.cdc.gov/health/diseases.htm GA. CentreNationaldelaRechercheScientifique,SolarEnergyLaboratory, Giles Boland, Harvard Medical School, Boston, MA. http://hms.harvard. FontRomeau,France.http://www.cnrs.fr/index.html edu/hms/home.asp C. G. Chaggaris, ORS Automation, Inc., Princeton, NJ. http://namc- KatherineR.Bonson,NationalInstituteofMentalHealth,Bethesda,MD. hitech.com/portfolio/ORS/ http://www.nimh.nih.gov/ Perng-Kuang Chang, United States Departmentof Agriculture (USDA), NewOrleans,LA. FredL.Bookstein,UniversityofMichigan,AnnArbor,MI. FrancisF.Chen,UniversityofCalifornia,LosAngeles,CA. BorgWarnerChemicals,EngineeringStaff,Washington,WV. Vinton G. Cherf, Internet Architecture and Technology, at MCI World- G.Bouissie`res,UniversityofParis,Orsay,France. Com. R.S.Boulton,MinistryofWorks,Wellington,NewZealand. R.H.Cherry,Consultant,HuntingtonValley,PA. C.O.Bounds,St.JoeMineralsCorporation,Monaca,PA. Boris Chertok, ENERGIASpaceAssociation,RussianFederation.http:// R.G.Bowen,ConsultingGeologist,Portland,OR. www.energia.ru/english/ PeterJ.Bowler,Queen’sUniversityofBelfast,Belfast,Ireland,UK. ThomasM.Chiang,UniversityofTennessee,Memphis,TN. Patricia T. Boyd, Ph.D., U. Maryland Baltimore County, and NASA’s A. Chiavello, Satellite Communications, Denver, CO. http://www.space- GoddardSpaceFlightCenter,Greenbelt,MD. colorado.org/index.html J.Boyle,Giddings&LewisElectronicsCompany,FondDuLac,WI. W. Chow, ElectricPowerResearchInstitute,PaloAlto,CA.http://www. J.M.Breen,AdaptiveIntelligenceCorporation,Milpitas,CA. epri.com/ EmeraBridger,SUNNY-ESF,Syracuse,NY. NeilD.Christensen,PennsylvaniaStateUniversity,Hershey,PA. E.H.Bristol,TheFoxboroCompany,Foxboro,MA.http://www.foxboro. HenrikI.Christensen,RoyalInstituteofTechnology,Stockholm,Sweden. com/us/eng/Homepage http://www.kth.se/?l=en W.H.Brock,UniversityofLeicester,Leicester,UK. DennonClardy,NationalAeronauticsandSpaceAdministration(NASA). AaronL.Brody,Packaging/Brody,Inc.,Duluth,GA. http://discovery.nasa.gov/ CeceliaM.Brown,UniversityofOklahoma,Norman,OK. DavidD.Clark,MITLaboratoryforComputerScience,Cambridge,MA. JohH.Brown,FortWorth,TX. http://www.csail.mit.edu/index.php P.M.Brown,FooteMineralCompany,Exton,PA. David L. Clark, Department of Geology and Geophysics, University of JanetBrowne,WellcomeInstitutefortheHistoryofMedicine,London,UK. Wisconsin,Madison,WI.http://www.geology.wisc.edu/home.html http://www.wellcome.ac.uk/ EuanN.K.Clarkson,UniversityofEdinburgh,Edinburgh,Scotland,UK. N.W.Browne,DavyMcKee(Oil&Chemicals)Ltd.,London,UK. J.Cobb,CognexCorporation,Needham,MA.http://www.cognex.com/ (cid:1) DonaldE.Brownlee,UniversityofWashington,Seattle,WA. NoelG.Coley,TheOpenUniversity,MiltonKeynes,UK. (cid:1) Nils Bru¨nner, Copenhagen University Hospital, Copenhagen, Denmark. DesmondH. Collins,RoyalOntarioMuseum,Toronto,Ontario,Canada. http://www.ku.dk/english/ http://www.rom.on.ca/index.php R.Brunner,SemiconductorProductsSector,MotorolaInc.,Phoenix,AZ, R.L.Colona,GeneralScanningInc.,Watertown,MA. BureauInternationaldel’Heure,Paris,France David P. Commander, Water and Rivers Commission, Perth, Australia. http://www.wrc.wa.gov.au/waterinf/index.html BruceG.Buchanan,UniversityofPittsburgh,Pittsburgh,PA. R.K.Conolly,AmericanPetroleumInstitute,Washington,DC.http://api- Robert Bud, ScienceMuseum,London,UK.http://www.sciencemuseum. ec.api.org/frontpage.cfm org.uk/ P. J. Constantino, Jervis B. Webb Company, Farmington Hills, MI. Alan Buis, JetPropulsionLaboratory(JPL),Pasadena,CA.http://www. http://www.jervisbwebb.com/jbw/jerviswebbhomepage def.htm jpl.nasa.gov/index.cfm AldoConti,Frascati(RM),Italy. B.M.Burns,CoalTechnologyAssociation,Gaithersburg,MA.http://www. JimmyG.Converse,SterlingChemicalsInc.,TexasCity,TX. coaltechnologies.com/ C.SharpCook,UniversityofTexas,ElPaso,TX. L.H.Busker,BeloitCorporation,Beloit,WI. P.H.Cook,TheDowChemicalCompany,Freeport,TX. W.F.Bynum,WellcomeTrustCentrefortheHistoryofMedicineatUCL, T.E.Cook,TheProcter&GambleCompany,Cincinnati,OH.http://www. London,UK.http://www.wellcome.ac.uk/ pg.com/main.jhtml RossN.P.Cahill,UniversityofMelbourne,Melbourne,Australia. E.R.Caianiello,InstitutodiFisicaTeorica,UniversitA`diNapoli,Naples, A.B.Coon,UniversityofIllinois,Urbana,IL. George R. Cooper, SchoolofElectricalEngineering,PurdueUniversity, Italy WestLafayette,IN.https://engineering.purdue.edu/ECE/ JoeCain,UniversityCollegeLondon,London,UK. GibertoCorbellni,University‘LaSapienza’,Rome,Italy. CharlesH.Calisher,ColoradoStateUniversity,FortCollins,CO. Katrina Cornish, United States Department of Agriculture (USDA), Canadian Association of Petroleum Producers, Calgary, Alberta, Washington,D.C.http://www.usda.gov/wps/portal/usdahome Canada.http://www.capp.ca/ D.A.Corrigan,Handy&Harman,Fairfield,CT. StefanoCanali,UniversityofRome,Rome,Italy. A.T.Coscia,AmericanCyanamidCompany,Stamford,CT. DonaldCanton,UniversityofFlorida,Gainesville,FL. KeithA.Crandall,BrighamYoungUniversity,Provo,UT. J.Caraceni,InternationalFuelCells,Inc.,SouthWindsor,CT. DavidL.Crawford,Ph.D.,InternationalDark-SkyAssociation,(Emeritus S.C.Carapella,Jr.,ASARCOLLC,Tucson,AZ.http://www.asarco.com/ Astronomer at National Optical Astronomy Observatories/Kitt Peak J.J.Carpenter,AmericanTimeProducts,Woodside,NY. NationalObservatory),Tuscon,AZ,LightPollution.http://www.darksky. Kenneth Carpenter, Denver Museum of Natural History, Denver, CO. org/ http://www.dmns.org/main/en/ J.H.Cronin,WestinghouseElectricCorporation,EastPittsburgh,PA K.J.Carpenter,UniversityofCalifornia,Berkeley,CA. A.B.Crossman,Brown&Root,Inc.,Houston,TX. Ann Koh Carolyn, ColoradoSchoolofMines,Golden,CO.http://www. J.M.Cruse,UniversityofMississippiMedicalCenter,Jackson,MS. mines.edu/index js.shtml F. A. Cucinotta,NASA-JohnsonSpaceCenter,Houston,TX.http://www. M. S. Carrigy, Alberta Oil Sands Technology and Research Authority, nasa.gov/centers/johnson/home/index.html Edmonton,Alberta,Canada.www.asra.gov.ab.ca/strategic/energy.htm W. J. Culhane, Mead Corporation, Chillicothe, OH. http://www. mead- R.T.Carson,EatonCorporation,Milwaukee,WI. westvaco.com/ (cid:1) (cid:1) ACKNOWLEDGMENTS ix V.Cullen,WoodsHoleOceanographicInstitution,WoodsHole,MA. TheodoreA.Endrenny,SUNNY-ESF,Syracuse,NY. http://www.whoi.edu/ Eurotunnel Exhibition Centre, Victoria Plaza, 111 BuckinghamPalace EmmaJ.A.Cunningham,UniversityofCambridge,Cambridge,UK. Road,LondonSW1WOST,UK. RobertA.Daene,BeloitCorporation,Beloit,WI. EurotunnelInformationCentre,St.Martin’sPlain,CheritonHighStreet, EliDahi,EnvironmentalDevelopmentCorporation,Søborg,Denmark. Folkstone,KentCT194QD,UK.http://ww1.eurotunnel.com/rcs/etun/pb english/en wp corp/index.jsp R. M. Dahlgren, The Procter & Gamble Company, Cincinnati, OH. http://www.pg.com/en US/index.jhtml B. Evans, Rare-earthInformationCenter,InstituteforPhysicalResearch E.E.David,Jr.,ExxonResearchandEngineeringCompany,Annandale, and Technology. Iowa State University, Ames, IA. http://www.external. NJ. ameslab.gov/RIC/index.html. R.Davis,NCRCorporation,FortCollins,CO. MaximeA.Faget,NASA-JohnsonSpaceCenter,Houston,TX.http://www. nasa.gov/centers/johnson/home/index.html R.Dean,GATechnologies,Inc.SanDiego,CA. 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