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BBC say it is possible to use Nickola Tesla tech to draw energy from the air

k1976

Alfrescian
Loyal
An experimental device, a humidity sensor, had started generating electrical signals. Fine, you might think – except that shouldn't have been possible.

"For some reason, the student who was working on the device forgot to plug in the power," says Jun Yao at the University of Massachusetts Amherst. "That's the start of the story."

Since that moment five years ago, Yao and his colleagues have been developing a technology that can harvest electricity from nothing but humid air: a concept known as hygroelectricity.

It's an idea that has been around for many years. Nikola Tesla and others have investigated it in the past but never achieved promising results. However, that could be about to change.

Multiple research groups around the world are discovering new ways of gleaning electricity from water molecules that naturally float in the air. It is possible because those water molecules can transfer tiny electrical charges between themselves – a process that researchers are aiming to control. The challenge is picking up enough electricity to be usable. But scientists now believe they may be able to harvest enough to power miniature computers or sensors.

It raises the tantalising prospect of a new form of renewable energy that might be floating all around us, practically 24/7.
 
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