WebRing: hub: "This ring is for Web Sites that have some content about Nikola Tesla or Tesla Coils. Tesla Coils being high voltage air core transformers which send long arcs of high voltage electricity through the air. Other HV device pages may be included (Van de Graaf machines, etc...) at the discretion of the RingMaster. Biographies about Nikola Tesla are acceptable. Unacceptable are sites that deal with fringe 'science'! COILERS UNITE!"