----------------------------Original message---------------------------- ------------------ Senior moments are =2Ajust=2A moments after all :-) The word returned to me when I looked at my image again (BTW it's a photo of Montreal's =C9cole des Beaux-Arts, designed by Jean-Omer Marchand and Ernest Cormier) and the term moir=E9 effect cam back loud and clear. =3E----------------------------Original message---------------------------- =3E =3EWe have a patron who wants to know what this sort of thing is called=21 = I =3Ehaven't got a clue, but I remember them well=21 Can any of you help? =3E =3ERemembr cracker-jack prizes? Sometimes the prize would be a tiny =3Eroundel that showed one image and if you move the roundel, it showed =3Eanother image. the plastic coating was ribbed so two different images =3Ewould show. What is that technique called? Thanks=21 Ray Anne Lockard =3E(regular art librarian again=21=21) =3E =3E=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F== 5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5= F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F =3EMail submissions to arlis-l=40lsv.uky.edu =3EAdministrative matters (file requests, subscription requests, etc) =3E to listserv=40lsv.uky.edu =3EARLIS-L Archives and subscription maintenance: =3E http://lsv.uky.edu/archives/arlis-l.html =3EQuestions may be addressed to list owner at: molinaro=40email.uky.edu Linda Bien, Adjunct Slide Librarian in Charge of Research Collections Concordia University Faculty of Fine Arts, Montreal, Canada Linbien=40vax2.concordia.ca 514 848-4690 __________________________________________________________________ Mail submissions to [log in to unmask] Administrative matters (file requests, subscription requests, etc) to [log in to unmask] ARLIS-L Archives and subscription maintenance: http://lsv.uky.edu/archives/arlis-l.html Questions may be addressed to list owner at: [log in to unmask]