UK
By 1878, he had installed a turbine-powered arc lamp to light his gallery and a multiple arc circuit in the house. The pupils were able to see the original lamps powered by hydro-electricity which are still in the library at Cragside. ...
And then came hydroelectricity, thousands of millions of watts of electric power generated by channelling rivers to turn giant turbines. ...
Sat, Nov 14 | from Newindpress on Sunday