Energy from a Single Orange

Every time you bite into an orange, you are tasting the results of the sunshine that went into the plant. The same sensation comes with other fresh ripe fruits and vegetables. In the orange battery, citric acid reacts with the zinc in nails inserted in an orange to release light energy. But the glow you see is not all that bright -photographer Caleb Charland, who made the battery, said the photograph required 14 hours of exposure! Still, this beautiful picture was worth it. More