The document summarizes wireless power transmission. It discusses how Nikola Tesla was a pioneer in wireless power transmission in the late 1890s, transmitting energy over long distances. More recently, MIT researchers have continued work on wireless power, transmitting energy using near-field techniques like inductive coupling or far-field techniques like microwave power transmission. Wireless power transmission has advantages like no wires or e-waste and efficient energy transfer over distances, but also challenges like tuning difficulties and safety concerns over field strengths. It has applications for both short-range uses like charging electric vehicles and long-range uses like transmitting solar power over continents.