In 1985 rheinländisch artist Joseph Beuys created the "Capri-Batterie", a multiple in 200 copies. One of them can be seen at the K21 in Düsseldorf. He did a lot of works concerning energy and he used different materials, which in his terms were "energy-rich materials", like fat, honey or felt. But in this case he used a lemon as "source" of energy.



Source: http://celle.de/media/custom/342_12108_1_g.JPG?1187335842



Now Hadley and Delaney are reproducing this in their little TV-kitchen and – who would have thought – it works! With a lemon, a zinc and a copper-pole, they can make a buzzer start of.




https://www.youtube.com/watch?v=f2deC3m0MNY



And finaly here's Hank explaining in very fast talking what it's all about:




https://www.youtube.com/watch?v=GhbuhT1GDpI



Now, Mr. Beuys, did you know that???