Theres nothing like the real thing,Id like to see a company have a set up where the school /classes come to you.Like a portion of a real 3 phase circuit where a branch can fall across it and they can see and hear the sound that we all know.If possible have them sitting in stands where they even can feel the heat. Photos dont always show whats really happening,vids are ok but still not close to what Im talking about.Anyway good luck.