Re: [APML]: What is Adaptive Optics?

["Gene J. Stratton" <gstratton@mindspring.com>]

Scott;
Thanks again for the reply.  I suspected that the reflection might be a
result of the differing indices of refraction at some layer in the
atmosphere, but I'm impressed to hear that there is enough reflection to
measure like that!  I have enjoyed hearing about your project...(and have
abandoned any fleeting thoughts of trying it in my back yard!)  :)
sincerely,
Gene Stratton
>> Thanks very much for the reply!  What reflects the beam back...and I
>> promise not to ask any more questions!  :)
>
>The questions are great, its my answers that appear not to hold 
>enough information. ;-).
>
>Rayleigh scattering is the natural consequence of light being 
>continuously emitted and reemitted as it passes through a media, in 
>this case our atmosphere. While the majority of light is forward