Finland sends electricity through air using sound waves and lasers for first time.
Scientists in Finland just pulled off something that once sounded impossible…sending electric power through the air. Using a mix of ultrasonic sound waves and laser beams, researchers managed to guide electricity without any physical wires. The test was done in controlled conditions, but it worked as planned. This moment is being seen as a serious step toward truly wireless power systems.
The research is being led by teams from the University of Helsinki and the University of Oulu. One method uses strong sound waves to shape the air itself, creating invisible paths that guide electric sparks. Scientists call this an acoustic wire. Another method uses lasers to help steer the energy safely and precisely across open space.
While this technology is still early and experimental, the future impact could be huge. Homes, factories, and smart devices could one day get power without plugs, cables, or contact points. That could change how cities are built and how devices are designed…