In <memo.20010807173537.19653N@tsphoto.cix.co.uk>, Tony Sleep wrote:
> Etched on titanium is probably worth a few aeons, at much higher cost.
>
I understand that someone is working on a method of storing data on
titanium disks. However they don't store it in true digital format. They
etch a microscopic image of the actual document onto the disk, using a
laser; rather in the way a laser prints on paper. Basically is a form of
microfilming, but in an even smaller size. The advantage is that it can
be read with an electron microscope, even if all knowledge of the
software and codes are loss. That is just as well, as they expect it to
have a life of up to 1m years!
Brian Rumary, England
