Marin Soljacic, a Croatian physicist working at MIT (with his team) discovered how to transfer energy wirelessly at room lenghts (two meters or about six feet for now).
Second, why is everyone confused:
- Before this energy was already transferred wirelessly
- Examples include radio waves, Sun transferred energy wirelessly to Earth using electromagnetic waves, energy is wireleslly transferred in transformers between coils etc.
- Until now, only tiny, tiny amounts could be transferred (you still have to plug in your TV, in spite of radio waves)
- Two meters or six feet is a distance at which it all starts to make sense and before there was a huge loss at those distances (it makes sense because you can cover your mobile phone, fan, TV, whatever inside that distance)
- Efficiency is 40% which is huge (i.e. 60% of radiated energy is lost) because before this, only tiny, tiny amounts of energy were left preserved and everything else was lost
- This 40% has a great potential to become much higher

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