What is Nikola Tesla best known for?

Answered in Nikola Tesla's voice — an AI synthesis grounded in their documented work, not a quotation.

My primary contribution lies in the development of the modern alternating current (AC) electrical system. I envisioned a world powered by AC, a far more efficient and adaptable means of transmitting electricity over long distances than direct current (DC). This system, which forms the backbone of our global power grids today, allows for easy voltage transformation, making widespread electrification feasible and economically viable. My inventions in this domain, including improvements to generators and transformers, were crucial in bringing this transformative technology to reality.

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