Web search results for make battery potato
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Make a Battery from Potato. Introduction: Batteries generate electricity through a chemical reaction between two different electrodes and one electrolyte.
http://www.miniscience.com/projects/PotatoElectricity/
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Materials. Large potato; About 4 inches of steel wire (wire from coat hanger, paper clip, etc.) or galvanized nail; About four inches of stiff copper wire
http://www.howard.k12.md.us/res/MakingStuff/potatobat.html
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How to Make a Potato Battery: This video will show how to make a potato battery.
http://www.monkeysee.com/play/6354-how-to-make-a-potato-battery
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A potato can function as an electrochemical cell or battery. It's fun to use a potato to power an LED clock.
http://chemistry.about.com/od/demonstrationsexperiments/ss/potatoclock.htm
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Make a note of which way around the positive (+) and a negative (-) points of the battery went. 3. Number the potatoes as one and two. 4. Insert one nail in each potato.
http://www.kidzworld.com/article/4726-how-potato-batteries-work