That was a new one on me and I had to go and look it up! I've actually seen a Ruhmkorff coil in action (moderately noisy as I recall), generating a 3-4 inch arc in air, and then when a wad of paper was placed in the way the arc went around until it finally punched through the paper.
Sorry, no. It was 10+ years back and I never saw one in use where there was no other illumination. They mostly came out around the camp fire of an evening and we never owned one ourselves. In the privacy of our own tent we used that traditional seventeenth century lighting system - the propane...
From practical experience with candles and the like, air currents are a menace. The moment the flame starts flickering, shadows move and whatever you thought you could see has changed. Back when I did seventeenth century battle enactments, one of the period pieces some people had was a pierced...
Go trawling on Google for demons/monsters/mythical creatures. When I was inventing demons and monsters I whiled away hours following the links until I found things that suited my story.
Some of my starting points were on Wikipedia - search there for "mythical creatures", "legendary creatures"...
Hi, I'm Mark Huntley-James from Cornwall, UK. I'm currently supposed to be straightening out the dragons and vampires in my third urban fantasy. Instead I'm hunting for distractions online, putting off doing the edits, and generally behaving like it's the weekend.:)