I filmed this several months ago:
YouTube - Gray Tube Replication | Radiant Energy | Cold Electricity
I'll post some more later when I have time.
The plastic tube acts like insulation on a wire...it is a dielectric to hold in the voltage potential INSIDE the tube to keep it from leaking. It locks in the pressure of the gas.
YouTube - Gray Tube Replication | Radiant Energy | Cold Electricity
I'll post some more later when I have time.
The plastic tube acts like insulation on a wire...it is a dielectric to hold in the voltage potential INSIDE the tube to keep it from leaking. It locks in the pressure of the gas.

If it is proven wrong, then just remember I posted this disclaimer above: 
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