11,ooo bc
sorry,, we didn't discover yet :(
nup
carlson discover the first time digital cameras
We do not know. There were no records when copper was used for the first time ABOUT 11,000 years ago. Copper was one of the very first metals used by man.
The earliest worked copper metallic piece was discovered in the Middle East, and was dated to near 9000 BC.
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Copper left in water for a long period of time can undergo a process called oxidation, where it reacts with oxygen in the water to form copper oxide. This can cause the copper to turn green or develop a patina on its surface. Additionally, prolonged exposure to water can lead to corrosion of the copper over time.
The word is "oxidation", which in the case of copper is a three-step process where the copper oxidizes to copper oxide, then to cuprous or cupric sulfide, and then to copper carbonate. Copper carbonate is the green colored copper or patina that forms over time. The old name for this green patina is "verdigris".
Copper is resistant to rusting, but it can still corrode over time.
by combining copper and cobalt in the oven to see if they would cause a chemical reaction and to his suprise they did and formed nickel
began with the discovery of
robert hooke