Tesla coil (ideally 1KW or bigger and ideally an SSTC)Ceramic Tube
Small Soft wood pieces (2-4cm long 5mm diameter)
Selection of materials (Salt, Strontium, Copper)
Soak the wood peices in a strong solution made from selection of test materials. In a well ventilated room place the wood pieces in place of the tesla coil breakout and run the tesla coil. Cut the power to the tesla coil if smoke or fire occurs on the breakout. Beware of materials that burn with poisonous smoke.
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