From what i've read in the articles, people are correct in saying its can be done but only for appliances that require very low power.
It seems to me that Speed Passion have designed this box with an ariel to demonstate what it might look like if the technology actually comes available.
The reality of running a 50A motor from a wireless power source could be possible in the future but it certainly isnt at the moment. Thats just my opinion though!
If you want a simple explanation, the way i understand it, the therory works on resonance. One device would emit a frequency, causing the other to resonate, and generate electricity. Similar to how a speaker can make an object vibrate - except this works on much higher frequencies.
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