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> -----Original Message----- > From: Association for Recorded Sound Discussion List > [mailto:[log in to unmask]] On Behalf Of Richard L. Hess > Sent: Monday, October 03, 2005 9:36 PM > To: [log in to unmask] > Subject: Re: [ARSCLIST] Requiem for the DAT (redux, was Storage of audio > CDs) > > At 08:49 PM 10/3/2005, Tom Fine wrote: > >Hi Richard: > > > >I'd worry even more about the dual-layer DVD > >media, just based on historical experience with multi-layer plastic > >products. > > Tom, Aren't all DVDs two layers of plastic? Every DVD is assembled from two 0.6 mm thick half-discs, with the information layer in the middle. Single layer discs have only one information layer. Dual layer discs have two information layers separated by a 55 micrometer thick spacer layer. Jerry Media Sciences, Inc.