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Vicente E. Garcia, HP SAP fan, on How to Make a Lemon Powered Clock.ppt

If you are ever wondering if a lemon can generate power, well you are in the right site. You see, lemons have the capacity to an electrochemical cell. This kind of cell converts chemical energy to electrical energy. All you need is a galvanized nail (with zinc coating) and some copper wire. They will conduct electricity from a chemical of the lemons while keeping the zinc and copper ions separated. Then, the electrons in the copper wire are forced to move thus, conducting electricity. This experiment is usually used with a clock.

This experiment is just simple; you can try this at home even with your kids. In showing kids different fun experiments, they will be engaged to these kinds of activities. Thus, this can help them to appreciate science. Lemons are all you need to provide energy. If you run out of lemons, you can try potatoes too.

Things You’ll Need:

1. A battery operated digital clock, more preferably, one without a plug. A clock using AA batteries are commonly used in this experiment for the wires are easier to rig. You can try clocks that use a different battery, but the wires must be rigged in a different way. 2. Two large galvanized nails. Keep in mind the word “galvanized” so that this experiment will work. 3. Two Copper wire (preferably the one that is uncoated) 4. Three alligator clip heads (the wires should have alligator clips on each other) 5. Two lemons. You can use one big lemon then cut into half but having two lemons is easier.


Step # 1: Gather all the things you’ll need for this experiment. Step # 2: (This may be an optional step) Place the lemons on any flat surface (preferably a plate). Step # 3: Get the lemons and label them lemons One and Two. Find the farthest spot in the lemon that the nail won’t pass through. You should put a copper wire into it. The experiment’s goal is to achieve a close d circuit so that the energy can flow from the lemon to the circuit and back again.

Step # 4: Open the battery’s compartment and remove its battery. You won’t need any battery because the lemons will now provide it. Step # 5: Connect lemon number 1 to connect the copper wire to the positive point of the clock using the alligator clips. Step # 6: Connect the nail (lemon number 2) to the negative point of the clock by using again the other alligator clips. Step # 7: Connect the cooper wore from lemon number two to the nail in lemon number 1.


1. If the clock stops, just replace the lemons and start the process again. 2. if the clock does not work, check if the circuit is connected to each other so that the clock will work properly. This can be a nostalgic experiment for many of us back in our grade school days, so show them to your kids, nephews, and nieces.

Thanks for reading!

Vicente E. Garcia, HP SAP follower, on how to make a lemon powered clock  

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