Harnessed by Tesla in 1896 with the Edward Dean Adams Power Plant which was based on Tesla's 25 Hz AC power system.

Nikola Tesla Landmarks - Page 3
Locations related to Nikola Tesla
After Tesla's death in 1943, his nephew, Sava N. Kosanović, was named as Tesla's sole heir. Mr. Kosanović was a politician for Tesla's Serbian homeland, then Yugoslavia, and worked with the government...