Battery Warehouse to energy. Three-segment AC era evolved via way of means of Tesla enabled the transmission of electrical electricity over extraordinary distances cheaply. Electricity changed into accordingly made extensively to be had to humanity to enhance the pleasant of existence. 250,000 mild bulbs light up Chicago's World Columbian Online Battery Warehouse Exposition in 1896 Figure 7: 250,000 mild bulbs light up the Chicago World Fair in 1893, additionally called Chicago's World Columbian Exposition. The fulfillment of the electrical mild brought about constructing 3 huge hydro turbines at Niagara Falls. .