  Laboratory observation of high-density filamentation or clustering of
electronic charge suggests that under certain conditions strong coulomb
repulsion can be overcome by cohesive forces as yet imprecisely defined.
Following an earlier suggestion by Casimir, we investigate here the possibility
that Casimir forces can lead to charge clustering of the type observed, and
conclude that such forces may play a role in the generation of robust
high-charge-density effects.

General Physics