George,  There was no previous post, I was just starting off in the middle
of a thought, sorry for the confusion.  - Richard.

George N. Allen writes:
> 
>  I have been following with interest the discussion about
> parts per million and particle size, but I must not have received
> a posting.
>  Richard's post refers to a laser, in terms that indicate
> something had previously been posted about it, but I never saw it.
>  I have a Beck machine, which I have not yet put to use,
> partly bbecause of the uncertainties raised by the discussion.
>  Could someone post about the laser to enlighten me -- and,
> I am sure -- some others.
>  Thanks,
>   George
>   [email protected]
> 
> 
> >From [email protected] Wed Jan 29 08:01:19 1997
> Date: Wed, 29 Jan 1997 00:52:16 -0500
> From: Richard Ginn <[email protected]>
> To: [email protected]
> Subject: raman scattering and particle size?
> Resent-Date: Tue, 28 Jan 1997 21:48:07 -0800
> Resent-From: [email protected]
> 
> We can get the laser, and now we need to know how to learn about Raman
> scattering and how to use that to determine the particle size and
> concentration of CS.  Anyone have a pointer to info?
> 
> -- 
>  
> Richard [email protected]