The Sower [SEP] material used
The Sower
The Sower (), created in 1907, is an oil on canvas painting by the Slovene Impressionist painter and musician Ivan Grohar. It is an image of a peasant sowing seeds on a ploughed field in an early and foggy morning. A hayrack, typical of the Slovene landscape, stands in the back, and even farther, the rocks of the small hill Kamnitnik near Škofja Loka. It has been a metaphor for the 19th-century myth of Slovenes as a vigorous nation in front of an unclear destiny
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