• Draw sparks with a wand connected to the VDG ground terminal.
  • To prevent shock, hold the wand to the dome when switching the VDG off.
  • Be careful not to scratch or dent the dome or wand.











         (persons with known heart conditions should not use this apparatus)
         (plug into dedicated outlet to avoid tripping circuit breaker)
         (keep VDG away from classroom computer and microphone)

  • Draw sparks with another sphere connected to the VDG ground terminal.















         (persons with known heart conditions should not use this apparatus)
         (plug into dedicated outlet to avoid tripping circuit breaker)
         (keep VDG away from smart cart, computers and microphones)

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