Place the copper sheet on an electric stove burner and turn the burner on high.
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Glue the aluminium strips to the glass slides.
Let the copper sheet turn completely black and then continue to heat it for another 30 minutes.
Turn off the burner and let the sheet slowly cool to room temperature.
Carefully measure a square in a 2 to 3 mm 0 079 to 0 118 in thick plastic board with a height and width about 1 mm 0 039 in larger than your solar cells.
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The copper sheet will turn many colors eventually turning black.
Yes you can using some very unusual items that are found around the house.
Cut backing for individual cells out of a thin plastic board.
Then cut out the backing using a strong craft knife.
Take the bowl and put the berries in.
Mash the berries and extract the berry juice.
The strips should be of equal sizes.
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Method on how to make a solar panel using foil.