More reliable electricity: AC Electric Power

When serbian immigrant Nikola Tesla bagan to work at Edison'S DC power plant in US,his new employer was not intrested in his ideas a new type of power AC.
At the time DC was the only electrical supply,but it could only be transmitted across short distance before it lose power. To Edison AC sounded like competition and he persuaded Tesla to improving his DC system by offering him a huge sum of money.
But when tesla had done what he had been asked,Edison reneged on his promise. Tesla resigned and returned to his AC power concepts.

AC power doesn't have the problem of losing of current as it varies in current, resistance is less,and yet it delivers the same amount of power. This made AC a special.
Entrepreneur George Westinghouse saw the potential of Tesla's AC power and bought his patents for AC motors.
AC power is much better than DC in most of the field of electricity. Almost all electricity around the world is now delivered as Tesla's AC power.

references : 1001 Inventions that changed the world .Thank you

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