Part 2/7:
The duo's inquiry centers around the concept of "hiding plasma", a term used to describe the phenomenon where plasma prefers to avoid direct contact with surfaces, using various mechanisms to conceal itself. Grenier detailed a methodical experimental setup involving copper pipes and spheres to investigate this behavior further. The experiments involved welding spheres onto a steel bar and using them to observe how plasma interacted with different configurations of holes and surfaces.
Experimental Observations
In Grenier’s setup, he utilized two types of spheres: one with a single hole at the top and another with two holes on opposite sides. The positioning of the anode was crucial, with one sphere allowing for visibility into its interior and the other preventing direct observation.