Message from discussion Wavelength response of first type of film with sound?

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From: Savageduck <savageduck1{REMOVESP...@me.com>
Newsgroups: rec.photo.darkroom,rec.arts.movies.tech,alt.photography,aus.photo
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Subject: Re: Wavelength response of first type of film with sound?
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Date: Tue, 12 May 2009 11:02:55 -0700

On 2009-05-12 08:29:17 -0700, GreenXenon <glucege...@gmail.com> said:

> Hi:
> 
> What wavelengths of light specifically affect the type of film used in
> the first movie containing an variable-density optical audio track? I
> am specifically interested in the chemical composition of the optical
> audio track.
> 
> From what I know, most of the more modern films are unaffected by red
> light.
> 
> I'm thinking of a theoretical device using analog audio recording on
> VD optical tracks containing the oldest film chemical composition. The
> source of light are multiple laser beams consisting of wavelengths
> that could record the audio onto the film. Each beam has a different
> wavelength. The beams are then mixed together to get a single beam of
> all the necessary wavelengths. The beam then shines onto the film to
> record the audio.
> 
> I don't have much of an application here. I'm just in it for the
> science.
> 
> 
> Thanks

Are you sure you aen't related to Hughes/Eugene?
-- 
Regards,
Savageduck