Nikola Tesla, born #OTD in 1856, used his AC system to generate electricity from Niagara Falls for the first time. He was an inventor who pioneered the alternating current electrical system. ⚡ ⚡ ⚡ . . . . . . . . . #facts #nikolatesla #tesla #science #history #scienchistory #sciencehero #airconditioning #niagrafalls #interesting #sciencefacts #electric #electricity #teslacoil #lightning