كهرباء مائية
محطات الطاقة الكهرومائية القديمة نصف الكرة الشمالي Appleton, وسكنسن, USA completed 1882, A waterwheel on the Fox river supplied the first commercial hydroelectric power for lighting to two paper mills and a house, two years after Thomas Edison demonstrated incandescent lighting to the public. Within a matter of weeks of this installation, a ...