Xref: utzoo comp.misc:12499 comp.periphs:3742 rec.music.cd:15923 rec.music.misc:69558 Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!wuarchive!sdd.hp.com!think.com!rpi!uupsi!ficc!peter From: peter@ficc.ferranti.com (Peter da Silva) Newsgroups: comp.misc,comp.periphs,rec.music.cd,rec.music.misc Subject: Re: What medium will be readable in 25 years? Keywords: computer music Message-ID: <197B26C@xds13.ferranti.com> Date: 10 May 91 15:21:19 GMT References: <8144@jhunix.HCF.JHU.EDU> <1991May1.174841.3321@investor.pgh.pa.us> <7f3J02pY07aM01@JUTS.ccc.amdahl.com> Reply-To: peter@ficc.ferranti.com (Peter da Silva) Organization: Xenix Support, FICC Lines: 15 In article <7f3J02pY07aM01@JUTS.ccc.amdahl.com> kls30@DUTS.ccc.amdahl.com (Kent L. Shephard) writes: > In article peter@ficc.ferranti.com (Peter da Silva) writes: > >Read/write opticals are probably no better than magnetic... you want a non- > >erasable medium. > Not true. You need both a magnetic fiedl and a laser of the correct > wavelenght to erase the medium. The problem isn't so much immediate erasure by an accidental occurrence (such as nuclear war), but self-erasure over time. Mechanical storage methods have a considerable advantage over those that involve molecular changes in the medium. -- Peter da Silva; Ferranti International Controls Corporation; +1 713 274 5180; Sugar Land, TX 77487-5012; `-_-' "Have you hugged your wolf, today?"