The idea of wireless transmission of electricity is not new but the new thing is the increase in efficiency to 40%. This is a significant improvement but certainly not enough to justify everyone getting rid of their wires. Since we would use up more electricity, the environment will not be too happy.
There are potential uses perhaps in the medical world where it may be a necessity but unnecessary applications like powering laptops should not be pursued (unless the efficiency reaches the wire version level). I do hope this unfortunate explosion in public interest does not trigger a boom in demand for implementing this in all sorts of devices. The environmental impact should not be underestimated.
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