On 30/01/04, Art Shifrin wrote:
> "I have shellac records over a century old which exhibit no
> deterioration other than wear!
> Steven C. Barr"
>
> How do you know that the disks have not in some way changed or
> deteriorated?
>
> Yes, they're playable but even glass changes shape over time.
I saw an exhibition of Roman glass a few years ago. Those bottles etc
didn't show any signs of having changed shape over 2000 years.
Regards
--
Don Cox
[log in to unmask]
|