Tesla's Great Eureka Moment

Tesla states, my method is different. When i get an idea, i start at once, building it up in my imagination. I change the construction, make improvements and operate the device in my mind. In 20 years, there has not been a single exception. Even tesla's great eureka moment that gave birth to the alternating current motor,. which we were talking about earlier. It occurred through a vision very similar to this. He had been toiling away at this exact problem for years; it apparently was the cause of his dropping out of university. And as he was walking with a friend on a beach at sunset, where he recited a passage he always admired from fa