Have you tried looking into "plasma actuators"?
Notice the blue glow over the electrode buried in the dielectric, perhaps
this was your blue light.
NT
On Fri, Feb 24, 2017 at 6:37 AM, ExtremeElectronics.co.uk <
tesla@xxxxxxxxxxxxxxxxxxxxxxxx> wrote:
> St Elmo's fire is only another name for Corona, from the description it
> doesn't sound like Corona.
>
> I suspect its more likely to be lit gas from a leaking capacitor or out
> gassing from hot insulation than anything HV related (apart from the
> ignition source)
>
> Derek
>
>
> On 24-Feb-17 13:21, BR G wrote:
>
>> St. Elmo's fire.
>>
>
> _______________________________________________
> Tesla mailing list
> Tesla@xxxxxxxxxx
> http://www.pupman.com/mailman/listinfo/tesla
>
_______________________________________________
Tesla mailing list
Tesla@xxxxxxxxxx
http://www.pupman.com/mailman/listinfo/tesla