I am looking at this formula:
from wiki for brakedown voltage in gas discahrge lamps
, and I see it's linear by length (d) (ops, I see it's divided by ln...).
Does that mean that I can make tiny neon lamp with just 0.1-0.05mm spacing between electrodes and it will glow as low as 5V for example?
Are there any gases which have lower minimal brakedown voltage than neon?
I guess using niddles instead of parralel plates would also lower brakedown voltage, as field is stronger?