Batterie a urina..
Bloggato da: Activemax il 4 May, 2006 in Uncategorized
A Singapore le stanno già sperimentando… così il “caricabatteria” non lo dimenticherete più a casa.. 
“..How does it work ?
The battery is made of a layer of filter paper steeped in copper chloride sandwiched between strips of magnesium and copper, then laminated in plastic.
It’s activated when a drop of urine is placed on the battery. The urine soaks through the paper providing the necessary conditions to generate electricity…”
[ Via Digg ]
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