A lemon powered clock is created by inserting two different metals, for example copper and zinc, into a lemon. The metal pieces act as electrodes, the places where electrons enter or leave the battery. Electrons enter at the positive electrode (the cathode), and leave at the negative electrode (the anode). In this experiment, the copper piece serves as the cathode, and the zinc piece serves as the anode.
Here is how to make your own lemon powered clock…
Cut a lemon in half. Connect the copper wire to the positive point of the watch on one end and to the copper piece inserted in lemon on the other end. Connect the other copper wire to the negative point of the watch on one end and to the zinc piece inserted in lemon on the other end.
Try potatoes if you’re out of lemons or some other fruit and make a fruit powered watch.
Filed Under: Technology & Science