A violet wand is actually a popular brand of sex toy or sensation device. There is no information on who may have used a violet wand in a mainstream movie.

You may be referring to an ultra violet light, hand held, which causes certain substances to fluoresce under the UV light. Body oils, semen, blood, fingerprints, security marks on stamps and banknotes are all applications for this simple technique.

No. Atleast i have yet of have seen a flyback transformer that could produce a 50khz+ 0.1 amp spark. the effect your looking for can be produced by a low output Hand held Oudin/tesla coil Aka "violet ray" or "violet wand"

a wand

his wand lol his wand lol his wand lol his wand lol