Re: How to View Mathematica and Hardcopy Books
- To: mathgroup at smc.vnet.net
- Subject: [mg62571] Re: How to View Mathematica and Hardcopy Books
- From: carlos at colorado.edu
- Date: Mon, 28 Nov 2005 00:58:11 -0500 (EST)
- References: <email@example.com><firstname.lastname@example.org> <200511260746.CAA06334@smc.vnet.net> <8C5474EF-A0B2-4AD1-BECD-2A716B4BABF0@mimuw.edu.pl> <email@example.com> <firstname.lastname@example.org>
- Sender: owner-wri-mathgroup at wolfram.com
The question of lifetime of digital recording is a murky one.
Some manufacturers (e.g. Kodak) now claim 200 years for a
properly stored (shielded cold vault) CD-R. That would be
comparable to books.
But in practice technology changes govern lifetime. When did you last
see a computer with 5.25" floppies or 1/2" magnetic tape? That means
media transfers are needed every 10-20 years to keep it accessible.
A book printed in 1800 on good quality paper is still readable.
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