Homebrew PCBs

>
> On Sun, 10 Apr 2005 14:30:31 -0300, Alexandre Souza
> <alexandre-listas@...> wrote:
>
>>
>>> Now if i only had food coloring at hand....
>>    Spherographic pen ink? Inkjet ink?
>
>
> I do not want too much of a mess.
> When looking at the drops on the inside of the glass one can see how much
> they change and if there are areas where they change less.
> I am not so sure color would make things easier to see (because you can
> never see the drops flying at 10000RPM anyway).

What about a strobe light? If you can syncronize it to the rotation of the
tube at some lower frequency it should make individual droplets more
visible.   Kind of like a timing light used to adjust spark on an engine. 
Just make sure you don't let anyone who has Epilepsy anywhere near when
you are testing it.

Ed Okerson