beam/transfer electricity wirelessly

Saw one nokia lumia mobile phone can be charged just by placing it on a pad.

Is there any way I can put a dongle on my house lighting or fan n allow them to be powered from batteries wirelessly?
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Thibault St john Cholmondeley-ffeatherstonehaugh the 2ndCommented:
On a pad is close coupled power transfer. Having your device charge from a few feet away is more complicated. It is possible but you would have to be very careful not to stand between the power source and the device. Tesla was working on wireless power transmission and there are some spectacular pictures of him standing near huge electrical discharges.

Quote from wiki:
An important issue associated with all wireless power systems is limiting the exposure of people and other living things to potentially injuriouselectromagnetic fields

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Here is some info on available wireless RF power sources:

This is very inefficient process.  It would probably cost on the order of $100 to transmit 100 mW, maybe enough for a small LED.
Dave BaldwinFixer of ProblemsCommented:
Although people have been proposing wireless power transfer for years, I will always vote against it.  It is frankly too dangerous.  Your microwave oven uses wireless power transfer and you can see what happens there.  Your house uses 10 to 100 times more power.  Large radar systems have fried / killed technicians working on them when someone 'accidentally' turned the transmitter on.
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Math / Science

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