He pushes nails into a lemon to show us with a trick that will amaze your guests...

Do you ever wonder how our ancestors lived before our world was invaded with all this technology?
 
Some people have wondered about that, and they have tried to use elements of nature in their new inventions.
 
Such is the case of the lemon, which has properties that allow it to produce electricity. Of course, this depends on the materials used... but if we follow the directions, there's no risk that this won't work.