Re: [ARSCLIST] MP3

[Mike Richter <mrichter@xxxxxxx>]

Steven C. Barr(x) wrote:

> I think I posted a while back to the effect that the laser beams used
> to play optical discs could, at least in theory, knock a few billion
> molecules from their places...but was told that wasn't possible
> because the actual information-bearing surface is protected by a
> layer of transparent plastic.

Quantum mechanics assures you that the process of measurement alters the 
object being measured. As I noted in an earlier comment on this thread, 
the effect will be minute, but not zero.

Also noted then - and since by at least one other - detection of the 
degradation is far from obvious. I maintain two working copies of some 
D2D LPs, playing one with some frequency and the other occasionally to 
see if I can detect degradation relative to the first. I know loss 
occurs with every playing, but so long as it is imperceptible to me and 
to those listening with me, it is de minimus and I neglect it.

Mike
--
mrichter@xxxxxxx
http://www.mrichter.com/