Re: The Consensus on Havana Syndrome Is Cracking

"Electric sparks are used for welding, powering electronics, killing
germs or for igniting the fuel in some car engines. Despite their
usefulness, they are hard to control in open space, they split into
chaotic branches that tend to go towards the closest metallic objects.
A recent study uncovers a way of transporting electricity through air by
ultrasonic waves. The level of control of the electric sparks allows to
guide the spark around obstacles, or to make it hit specific spots, even
into non-conductive materials.
"We observed this phenomenon more than one year ago, then it took us
months to control it, and even longer to find an explanation," says Dr.
Asier Marzo from the Public University of Spain, lead researcher of the
work.
This guidance occurs because the sparks heat up the air, which expands
and lowers its density. The hot air is then guided by ultrasonic waves
into regions where the sound intensity is higher and the next sparks
then follow these regions of lighter air because of its lower breakdown
voltage."
https://www.sciencedaily.com/releases/2025/02/250206113737.htm