Ever since Nikola Tesla demonstrated the wireless transmission of electricity, the world has been fascinated by the idea and countless people have tried to make it work. Physics have continuously gotten in the way…the power transmitted decreases dramatically with distance. UBeam is taking a different approach though…using targeted ultrasound to accomplish this. Electricity is converted to ultrasound, broadcasted to your approximate location, where a receiver then converts it back into electricity. Imagine your iPhone automatically charging when you walk into Starbucks, for example. Pretty cool. Read more about it here.