大教堂之谜

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  • FromPBS:ThedomethatcrownsFlorence’sgreatcathedralo… FromPBS:ThedomethatcrownsFlorence’sgreatcathedralofSantaMariadelFiore—theDuomo—isatoweringmasterpieceofRenaissanceingenuityandanenduringsourceofmystery.Stillthelargestmasonrydomeonearthaftermorethansixcenturies,itistallerthantheStatueofLibertyandweighsasmuchasanaveragecruiseship.Historiansandengineershavelongdebatedhowitssecretivearchitect,FilippoBrunelleschi,managedtokeepthedomeperfectlyalignedandsymmetricalasthesidesroseandconvergedtowardthecenter,40storiesabovethecathedralfloor.Hislaborerstoiledwithoutsafetynets,applyingnovel,untriedmethods.Over4millionbricksmightcollapseatanymoment—andwestilldon’tunderstandhowBrunelleschipreventedit.Totestthelatesttheories,ateamofU.S.masterbricklayerswillhelpbuildauniqueexperimentalmodelDuomousingperiodtechniques.Willitstayintactduringthefinalprecariousstagesofclosingoverthetopofthedome?

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