[78-L] Groove spacing - groove width

[Mark Bardenwerper]

On 11/19/2016 9:18 AM, Ron wrote:
> Weren't the first Vitaphone movie discs issued in 1926?  I believe the first
> Vitaphone movies were shorts, but that in 1926 "Don Juan" was a silent film
> issued with a Vitaphone sound track comprised only of music and sound
> effects, no dialogue.
>
Perhaps someone could tell if the assertion that diameter of record was 
dependent upon the length of the film, as stated here
https://en.wikipedia.org/wiki/Vitaphone

-- 
Mark L. Bardenwerper, Sr.

Technology...thoughtfully, responsibly.

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