Physics
Squeezing loofah sponges creates enough electricity to power LEDs
Sponges derived from luffa plants could act as tiny power sources for small devices, say researchers - but they may not supply enough energy to be practical
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Sponges derived from luffa plants could act as tiny power sources for small devices, say researchers - but they may not supply enough energy to be practical
The European Union wants all smartphones and other portable devices to use USB-C chargers, but Apple says such a law would stifle innovation for its iPhones