BBC NEWS | Technology | Physics promises wireless power

US researchers have outlined a relatively simple system that could deliver power to devices such as laptop computers or MP3 players without wires.

1. Power from mains to antenna, which is made of copper

1. Antenna resonates at a frequency of 6.4MHz, emitting electromagnetic waves

1. ‘Tails’ of energy from antenna ‘tunnel’ up to 5m (16.4ft)

1. Electricity picked up by laptop's antenna, which must also be resonating at 6.4MHz. Energy used to re-charge device

1. Energy not transferred to laptop re-absorbed by source antenna. People/other objects not affected as not resonating at 6.4MHz

I for one will be watching with much interest!

(Via interactivearchitecture.org.)