1. Prepare Base
Position your light bulb base at one end of the wooden board, leaving room on the other end for the ceramic cup. * 2
Secure the light bulb base by attaching screws to the base and tightening with a screwdriver. Do not drive the screws flush into the base; instead, leave the top of the screws exposed so that you can attach alligator clips. * Sponsored Links
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Insert the light bulb into the base and twist gently to tighten. 2. Saltwater Battery
Place one teaspoon of salt in the ceramic cup.
Dispense six ounces (3/4 cup) of water into the cup and stir to dissolve the salt. * 6
Add one teaspoon of vinegar and 1/4 teaspoon of bleach into the solution; stir. * 7
Cut two equal lengths of copper wire, so that each can extend from the light bulb base to the ceramic mug. * 8
Strip the coating from each end of the wires and attach alligator clips to each. If desired, connect one color of alligator clips on each wire, so that one wire has two black ends and the other has two red ends. * 9
Place the iron nails in the cup filled with saltwater solution, taking care that the nails do not touch each other and are not submerged. * 10
Clip one end of one wire to the exposed top of one nail and clip the other end to one screw of the light bulb base. * 11
Repeat step 7 for the other nail and the other screw on the light bulb base. * 12
Observe the intensity of the lighted bulb.
Detach the alligator clips from the light bulb base and clip to the connectors on a voltmeter, if desired, to measure the voltage from your saltwater battery.
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