The retro “drinking bird” is making a surprising comeback — as the inspiration for a clean-energy generator that could one day power your watch and phone.

The "drinking bird" is a teaching tool that for a time cropped up often in early physics lessons, as it was used to demonstrate the basics of thermodynamics, ...

"The drinking bird triboelectric hydrovoltaic generator offers a unique means to power small electronics in ambient conditions, utilizing water as a readily available fuel source," said Wu.

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The retro “drinking bird” is making a surprising comeback — as the inspiration for a clean-energy generator that could one day power your watch and phone. CNN values your feedback 1.

But using the drinking bird method, scientists have managed to generate an output of 100 volts using just 100 millilitrers of water, enough to power small electronic devices.

By Billy Stockwell, CNN (CNN) — The top-hatted “drinking bird,” once a fixture in science classrooms for demonstrating the basics of thermodynamics, is making a surprising comeback — as ...