I did an experiment testing the thickness of a salt bridge (made of filter paper soaked in potassium nitrate) on the voltage produced from Zn and Cu half cells. This is similar to a thread someone made back in 2007. But I have no idea how to explain my findings or whether the thickness even has an effect. Here are my results: AVG Voltage 1 layer 7.1 2 layers 8.9 3 layers 9.0 4 layers 9.1 5 layers 9.2 Each strip of filter paper is 6 x 2 cm, stacked on top of each other to create the layers. According to the thread above, it shouldn't have an effect. But how do I attempt to explain the chemistry behind these results?