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Build your own DVD player

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"Dick Sidbury" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> Jon Purkey wrote:
>> On Sat, 12 Feb 2005 10:35:47 -0500, RichA <(E-Mail Removed)> wrote:
>>>Oddly enough, the guy was right; You can use a lens from a CD player to
>>>focus a DVD laser. You just have to bring it
>>>in a little closer...

>> Is he right about:
>>>DVDs have just one groove, the same as those old vinyl records

>> I thought it was rings?, more like a diskette.

> Well I'm not sure but since this is useNet, that doesn't stop me from
> answering anyway CDs have one track that sprials so I'd assume that
> DVDs do as well.
> dick

No rings. The data is in a spiral, inside out. It is, specifically, and
Archimedes spiral.

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