Rivals in the "War of the Currents".

Court of Honor at The World’s Columbian Exposition in Chicago in 1893.

(1901–1917) also known as the Tesla Tower, was an early wireless transmission tower designed by Nikola Tesla and intended for commercial trans-Atlantic wireless telephony, broadcasting, and proof-of-concept demonstrations of wireless power transmission. It was never fully operational and the tower was demolished in 1917.

Discharging Tesla Coil and its inventor sitting in front of it.