what is tesla coil used for
These Tesla coils are often used by hobbyists and at venues such as science museums to produce long sparks. The American Electrician gives a description of an early Tesla coil wherein a glass battery jar, 15 Ã 20 cm (6 Ã 8 in) is wound with 60 to 80 turns of AWG No. 18 B & S magnet wire (0.823 mmÂ²).