...Wireless energy transfer or wireless power is the transmission of electrical energy from a power source to an electrical load without interconnecting wires!power transmission differs from that of wireless telecommunications, such as radio. ...With wireless power, efficiency is the more significant parameter. A large part of the energy sent out by the generating plant must arrive at the receiver or receivers to make the system economical. Wireless transmission is useful in cases where interconnecting wires are inconvenient, hazardous, or impossible. ,,,a more challenging situation here is,,,will we reach a point were we can transfer power from source to destination just as we transfer files from one computer to another via wireless sources? foristance,,,,one computer runs out of charge and we simply transfer power to that computer "wirelessly"! its a challenge to all scientists!!!