Re: lightning bolts in acrylic block

[Ludwik Kowalski <kowalskiL@MAIL.MONTCLAIR.EDU>]

"Sparking traces" in plastic cubes, if I recall correctly,
are confined to planes, more or less. Why is it so?

William Beaty wrote:

> Anyone know where to (still) get these things?  Note that
> saradeangelis@earthlink.net isn't subscribed and won't see replies to this
> list.
>
> > I'm searching for Lichtenberg figures in plexiglass. Up until recently
> > they were available through Nasco, Carolina biologica and Science First.
> > All these vendors got their figures from the same source. Unfortunately
> > due to a cost increase in the rental time for the Linear particle
> > accelorator the source has dried up. ....