Until now, it has been widely believed that wires are necessary to transmit electricity from one place to another.

Breakthroughs, discoveries, and DIY tips sent six days a week. Terms of Service and Privacy Policy. To the uninitiated, electricity might seem like a sort of hidden ...

Finnish scientists sent electricity wirelessly using sound waves and lasers. "Acoustic wire" uses ultrasonic waves for contactless electricity transmission. Finland pioneers practical wireless ...