A post circulating online claims that scientists in Finland have successfully transmitted electricity through air using ultrasonic sound waves and laser beams, positioning the country at the forefront of a wireless energy revolution.
Rating: MISLEADING
Whatโs being claimed
A circulating post claims that researchers from the University of Helsinki and the University of Oulu have pioneered cable-free electricity transmission using ultrasonic sound waves, lasers, and radio frequencies.
It suggests these technologies could soon replace traditional wiring and enable large-scale wireless power infrastructure.
Whatโs true
Scientists have guided electric sparks using sound waves โ in the lab.ย
Researchers from the University of Helsinki and collaborators demonstrated that focused ultrasonic sound waves can guide small electric sparks through air. The sound waves alter air density, creating a preferred path for electrical discharge.
The findings were published in Science Advances and featured in official university releases.
However, this experiment involved tiny sparks over short distances, not continuous or usable electrical power for devices or grids. Researchers themselves describe the work as fundamental research, not a ready-to-use energy system.
Wireless power via lasers and radio waves exists โ but only for niche uses.
Laser-based power transmission (โpower-by-lightโ) has been demonstrated globally, including by private firms and research institutions. These systems can power remote sensors or electronics in hazardous or hard-to-reach environments, such as inside industrial facilities requiring electrical isolation.
Similarly, radio-frequency (RF) energy harvesting โ sometimes described as โWi-Fi for powerโ โ is a real and active research field. It allows very low-power devices, such as IoT sensors, to harvest ambient radio waves and reduce dependence on disposable batteries.
Whatโs misleading
Electricity is not being transmitted wirelessly at practical scale.
The claim suggests that Finland has achieved functional, cable-free electricity transmission. This is not accurate. The ultrasonic experiment does not transmit usable electrical power, and laser-based systems remain limited by efficiency, safety, distance, and line-of-sight constraints.
No imminent wireless energy โrevolution.โ
While Finnish universities are contributing to cutting-edge research, there is no evidence that these technologies are close to replacing conventional wiring or power grids. Experts caution that widespread wireless electricity remains experimental and speculative.
The source exaggerates the findings.
Although the University of Helsinki published research on guiding electric sparks with sound, the claim conflates laboratory demonstrations with real-world energy transmission, overstating both the scale and readiness of the technology.
The verdict: MISLEADING
The claim is based on real scientific research but overstates its implications. Finnish scientists have not achieved practical wireless electricity transmission. Current experiments involve small-scale demonstrations and niche applications, not a cable-free power infrastructure.
Wireless energy technologies using sound, light, or radio waves are promising research areas, but they remain far from powering homes, cities, or national grids.
Exaggerated claims about โwireless electricityโ can fuel misinformation, unrealistic expectations, and tech hype. Understanding the difference between experimental physics and deployable energy systems is crucial โ especially as societies debate the future of energy and infrastructure.
โ Daily Sun Chronicle Fact Check Desk
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