Take a look at the pictures at Eddie Ciletti's website, he addresses your
> From: "Watsky, Lance" <[log in to unmask]>
> Reply-To: Association for Recorded Sound Discussion List <[log in to unmask]>
> Date: Tue, 1 Mar 2005 10:25:56 -0500
> To: [log in to unmask]
> Subject: Re: [ARSCLIST] Identifying Acetate Tapes
> I was hoping that someone can tell me if the following statement is true or
> A colleague was telling me that you can tell the difference between an
> audiotape that was recorded on an acetate tape, versus one that was created on
> a polyester base, by holding the tape up to a light source. The colleague went
> on to say that light will pass thru the acetate tape, whereas it will not pass
> thru polyester tape.
> I found this rather strange because with film, the opposite is true, light
> will not pass thru an acetate film, but will be able to shine thru the
> polyester film.
> I personally believe that what the colleague was seeing had more to do with
> the fact, that since acetate tapes are much older, that the audio packs are
> going to be looser, and that what she was actually seeing is the light coming
> thru the gaps.
> Any thoughts on this would be greatly appreciated.
> Thank you,
> Lance Watsky
> Preservation & Media Specialist
> The Georgia Archives
> 5800 Jonesboro Road
> Morrow, GA 30260
> 678-364-3764 (phone)
> 678-364-3860 (fax)
> [log in to unmask]