Simple electric arc, spark gap.
I am making a piece of art. The piece requires a simple electric arc, before I go spending a lot of time experimenting with different transformers and capacitors I was thinking that maybe someone already had a valued diagram of this project. Remember just a simple arc. I understand the spark gap will have to be really close because I'm only using a 9volt battery. I'd like to get the voltage up to about 500,000 volts to insure a good spark. The stream would be activated by a switch. The entire workings will be encased in a plexiglass box. The works are much like a stungun. Please don't respond with complicated Tesla coils, etc. Remember simple arc, gapped, two electrodes. KISS.