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Mike Kaliski wrote:
http://news.bbc.co.uk/1/hi/technology/6725955.stm

Gives details of power transmission without wires. This story first seems
to
have broken in November last year, but they have moved up from charging
mobile phones to lighting a 60 watt light bulb.

Apparently the system works with efficiencies of up to 40%. Wow! The
power
companies must be getting desperate, with low wattage lighting and LCD
displays using so much less power than before. Makes me wonder what the
other 60% is going to be cooking, me or the ozone layer.

Most likely the front end of your reciever if this idiotic idea ever
gets implemented.

Most of the charger thingies I have around the house are in the 2-5 W
range.

2 W at 40% means they have to radiate 5 W.

Looks like an opportunity for some enterprising entrepreneur types to
invent
a more efficient transmission and receiving system - I suggest
straightening
out the wire coils and connecting the light bulb directly. That should
improve power transfer efficiency to over 95%.

Mike G0ULI

--
Jim Pennino

Perhaps a grazzing antenna would improve the efficency.