There is a negative and positive pole or aspect to everything With that being said, every person religious and non-religious suffers from this dillusion. (religion.blogs.cnn.com)
When the animal sends out an electric pulse, most of the charge comes from its head, which Catania calls the «positive pole.» (scientificamerican.com)
For a battery to work, it must have the following three key components: an anode (the negative pole), a cathode (the positive pole) and an electrolyte. (sciencedaily.com)