Optical Shop TestingThird EditionEdited byDANIEL MALACARA1807WILEY2007Wiley-InterscienceA John Wiley Sons,Inc.,PublicationOptical Shop Testing1807WILEY2007THE WILEY BICENTENNIAL-KNOWLEDGE FOR GENERATIONSach generation has its unique needs and aspirations.When Charles Wiley firstopened his small printing shop in lower Manhattan in 1807,it was a generationof boundless potential searching for an identity.And we were there,helping todefine a new American literary tradition.Over half a century later,in the midstof the Second Industrial Revolution,it was a generation focused on building thefuture.Once again,we were there,supplying the critical scientific,technical,andengineering knowledge that helped frame the world.Throughout the 20thCentury,and into the new millennium,nations began to reach out beyond theirexpanding its operations around the world to enable a global exchange of ideas,opinions,and know-how.For 200 years,Wiley has been an integral part of each generation's journey.enabling the flow of information and understanding necessary to meet their needsand fulfill their aspirations.Today,bold new technologies are changing the waywe live and learn.Wiley will be there,providing you the must-have knowledgeyou need to imagine new worlds,new possibilities,and new opportunitiesGenerations come and go,but you can always count on Wiley to provide you theknowledge you need,when and where you need it!WILLIAM J.PESCEPETER BO▣TH WILEYPRESIDENT AND CHIEF EXECUTIVE OFFICER