Copper Patina

Copper

Copper is a chemical element; it has symbol Cu and atomic number 29. It is a soft, malleable, and ductile metal with very high thermal and electrical conductivity. A freshly exposed surface of pure copper has a pinkish-orange color. Copper is used as a conductor of heat and electricity, as a building material, and as a constituent of various metal alloys, such as sterling silver used in jewelry, cupronickel used to make marine hardware and coins, and constantan used in strain gauges and thermocouples for temperature measurement.

Patina

Patina is a thin layer that variously forms on the surface of copper, brass, bronze, and similar metals and alloys, or certain stones and wooden furniture, or any similar acquired change of a surface through age and exposure.

Copper (color)

Copper is a reddish brown color that resembles the metal copper. The first recorded use of copper as a color name in English was in 1594.

copper

Noun

1. A reddish-brown metallic chemical element (symbol Cu) with the atomic number 29; also, the metal made up of this element.
2. The reddish-brown colour of copper (etymology 1, noun sense 1).

Adjective

1. Made of copper (etymology 1, noun sense 1).
2. Having the reddish-brown colour of copper.

patina

Noun

1. A paten (a flat type of dish).
2. The colour or incrustation which age and wear give to (chiefly metallic) objects; especially, the green rust which covers works of art such as ancient bronzes, coins and medals.

Adjective

1. Of a green colour, tinted with grey, like that of bronze patina.