More on topic:
While watching the dvd Tesla Radiant energy, the term Neutral Aether
popped up a few times. How can the aether be neutral if it makes these
voltages? I suppose it does seem like a neutral particle of air, if it can be blown on the top of oil to cause a 2 inch depression. This is stated in the paper: On the Dissipation of the Electrical Energy of the Hertz resonator.
google this paper. Tesla insists its like air.

Does anyone know where to get the Prof. Bjerknes article mentioned by Tesla in this paper. Seems like this air caused by a sudden discharge moved these diaphrams. Think the article is in 1893 issue of Telephone Magazine. Can't find anywhere, but I see a snipet on google books.