1. First, consider the Galvani potential between two metals. 2. However, their Galvani potentials will be different ( unless the metals are identical ). 3. Dissimilar metals in contact produce what is known also as a contact electromotive force or Galvani potential . 4. Generally, the Galvani potential difference is measurable only when the two phases have identical chemical composition. 5. As explained above, we can divide the voltage into two pieces : The galvani potential , and everything else. 6. In a traditional metal-insulator-metal capacitor, the galvani potential is the " only " relevant contribution. 7. Where the difference on the left-hand side is the Galvani potential difference between the phases ( 1 ) and ( 2 ). 8. Therefore, as the capacitor charges or discharges, the voltage changes at a " different " rate than the galvani potential difference. 9. At a high aqueous pH, the acid is in the anionic form and can exist in both phases according to the Galvani potential difference. 10. When a voltmeter is used to measure an electronic device, it does not quite measure the pure electric potential ( also called Galvani potential ).
