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I'm finding that when people post to the ARSCLIST, I see a real delay in
them coming up on my computer.  Don's post below was supposedly sent
this morning at 8:13 A.M., and I only received it at about 6:40 P.M.
PST.  Does anybody know why the delay?

Don Cox wrote:

>On 24/09/03, James L Wolf wrote:
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>
>> Just wondering. Once the processing and storage capabilities for 3-D
>>modeling of a groove arrive (10+ years?), wouldn't it also be possible
>>to model a "perfect" stylus for that groove and create a result from
>>their ideal virtual interaction? Would this be the best way to extract
>>info from a groove?
>>
>>
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>I think not, because the purpose of a stylus is only to describe the
>shape of the groove. If you already know that from your scanning
>microscope (optical or electron) then you don't need a stylus.
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>>  But 3-D is the only way to go. Jon Noring is absolutely right; 2-D
>>is a waste of time. It only reads the edge(s) of the bottom of the
>>grove, the results I've heard  (under relatively good listening
>>conditions) were really poor, and vertical grooves are impossible, so
>>there's no point in messing with it, except maybe for emergency
>>preservation of broken laquers or something similar.
>>
>>
>
>Regards
>--
>Don Cox
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