Vital Spark [Explored]
Connection spark. A real one - not photoshopped! I wanted to show electrical sparks when metals at different voltages come in contact.
I ended up building a simple circuit with a large capacitor to deliver large currents (at about 40 volts) that generally were enough to just weld the two metals together.
Raised fond memories of fun messing about with big capacitors as a young boy!
I put a UV filter on my lens! Single shot. The hemispherical part of the stainless steel pin is 8.5 mm diameter. The coil is lacquered copper wire.
The exposure was about 1 second and the current was applied by manually touching the pin gently with a "live" wire toward the end of that second. Surprisingly effective I thought!
I thought I would need flash, but LED lighting seemed to work just fine.