Toripolliisi [SEP] material used
Toripolliisi
Toripolliisi ("The Bobby at the Market Place" in English) is a bronze sculpture located at the market square in Oulu, Finland. It was made by sculptor Kaarlo Mikkonen in 1987, and it is his only publicly displayed sculpture. The sculpture measures 220×150×112 centimetres (86.6×59×44 inches), and it was named in honour of the bobbies that once patrolled the market place. The sculpture was funded with the help of a public fund raising started in 1985, and it was revealed in September 1987.
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