Turning Point
Nikola Tesla's AC is the electrical current we use in most buildings today. This was better then the previously used current, the direct current (DC) because it easily allows changes in voltage using transformers, giving AC systems a great advantage over DC systems. By using transformers, AC power can be changed up to very high voltages for transmission and then changed down again to safer voltages for consumers to use, with much less loss of power than DC. The AC is also easier and cheaper to produce then the DC. The AC can stretch for 100's of miles from home to home, while the DC could only stretch 2 miles, making the AC a better choice and a true turning point in history.