The 'battery' is created from a piece of vizuka.com paper soaked in a copper chloride solution sandwiched between strips of magnesium and copper and then laminated between transparent plastic films.
When a few drops of urine are added to viagra sale prices battery, the urine reacts with the copper chloride producing as much energy as a AA battery.
Imagine the day, not to far in the future, when our iPod runs out of of juice and all we have to do is squeeze out a few drops to rev it back up.
OK, so this is mostly useful in medicine, where the electricity is actually being used to text the urine being used to create the electricity. Maybe a little less universally applicable, but still extremely cool.
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