Marshall, would it be possible for you to give me an explanation of why number 
(3) showed *no* beam thru the solution at all?

And for that matter, why there is a difference in strength of beam in the other 
two?

All lasers were used on the same solution.

 

Three different red lasers, 
> (1) 650nm+/-10 maximum output 1mW.......{strong beam passing thru liquid}
> (2) 650nm+/-10 maximum output 5mW.......{fainter beam}
> (3) 630-650nm  maximum output 1mW.......{no beam at all}

 

N.
                                          
_________________________________________________________________
If It Exists, You'll Find it on SEEK. Australia's #1 job site
http://clk.atdmt.com/NMN/go/157639755/direct/01/