Put a 3-inch copper nail and a 3-inch atomic number 30 nail into the potato concerning one in. excluding one another. Push the nails to a depth of concerning one 1/2 inches. Cut 2 6-inch strips of terribly skinny wire and take away 1/2 in. of plastic from the ends of the wire strips. Wrap one among the ends of every wire strip round the high of every nail. place the alternative ends of the wire onto the 2 terminals on a 1-volt crystal rectifier bulb. The crystal rectifier illuminates, however it’s rather dim as a result of little electricity is created.
