Intrigued Londoners looked on today as a smartphone's battery was charged by a strange contraption made of 800 apples and potatoes connected with hundreds of nails and lengths of copper wire.
The art installation was created outside the Westfield shopping centre in Shepherd’s Bush, essentially just a large-scale version of the classroom science experiment where a single potato is used to power a digital clock.
By stringing 800 pieces of fruit and vegetables together with galvanized nails and wire, artist Caleb Charland was able to scale-up the power output so much that it could charge a mobile phone – in this case a Nokia Lumia 930, charged via a wireless mat.
The hand-built circuit created an electrical current of an average 20mA and around six volts
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