A new and really stunning technological invention has been made which allows people to power their phones with energy from their bodies.
In a time where power-banks and solar-power devices have become mainstream, a device that lets you charge gadgets on the go doesn’t sound very special. But while power-banks have to be charged the old fashioned way, and solar panels need the sun to store energy, HandEnergy just needs a hand. And I mean that quite literally. To get this little guy to produce energy, which it then stores in built-in batteries, all you have to do is hold it in your hand and rotate your wrists.
The working principle behind HandEnergy is that of a two-axis rotor gyroscope.
“You may be familiar with the wrist-training device called the Powerball, which is a powerful handheld gyroscope,” HandEnergy co-founder Alex Novik told Digital Trends. “We came up with the idea of putting a battery, metal coil and magnets inside a similar device for generating electricity. We spent a year developing it, trying to find the best materials we could. After around a dozen prototypes, we finally arrived at one that we were happy with.”