Bust of Camilla Barbadoni [SEP] material used
Bust of Camilla Barbadoni
The Bust of Camilla Barbadoni is a marble sculpture by the Italian artist Gian Lorenzo Bernini. Executed in 1619, it portrays the (deceased) mother of the Maffeo Barberini. Camilla had died in 1609. Barberini would become Pope Urban VIII in 1623.
to cathodically protect metals that are exposed to sea water. A zinc disc attached to a ship's iron rudder will slowly corrode while the rudder stays intact. Similarly, a zinc plug attached to a propeller or the metal protective guard for the keel of the ship provides temporary protection.
With a standard electrode potential (SEP) of −0.76 volts, zinc is used as an anode material for batteries. (More reactive lithium (SEP −3.04 V) is used for anodes in lithium batteries ). Powdered zinc is used in