Nikola Tesla was an Electrical Engineer and great innovator in history who was awarded about 300 patents, he discovered and patented the rotating magnetic field, the basis of most alternating-current (AC) machinery.
My Inventions_ The Autobiography of Nikola Tesla
Thank you for your sharing. I am worried that I lack creative ideas. It is your article that makes me full of hope. Thank you. But, I have a question, can you help me?