On 02/03/08, Mike Richter wrote:Don Cox wrote:
Manufactured CDs (with physical pits) should last as long as 78s.
That is far from clear. The pits and lands themselves may survive, but they are read by reflection from the vulnerable metallized layer.
That layer doesn't seem to be very vulnerable, except in the few well-known cases of faulty manufacture.
Some time, somebody will devise a solvent to remove the metal so that a faulty disc can be replated.
Regards -- Don Cox doncox@xxxxxxxxxxxxxx