Sony Wireless Power

I blogged before about attempts to power devices wirelessly in the labs at MIT in the USA. Now it seems that Sony has demonstrated the ability to 'transmit' 100 volts over a 50cm range. This was enough to power a small television set wirelessly! Some fairly big (40cm) coils are required to do this using magnetic resonance. There is no indication that this would lead in the short term to applications in commercially available products, indeed it might be prudent to measure and understand what effect the use of magnetic resonance might have on the human body at these field strengths first! However it demonstrates that the last common umbilical cord for consumer electronics is now under threat!