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The largest mass of elemental copper discovered weighed 420 tonnes and was found in 1857 on the Keweenaw Peninsula in Michigan, US. [29] Native copper is a polycrystal, with the largest single crystal ever described measuring 4.4 × 3.2 × 3.2 cm. [30]
Perey discovered it as a decay product of 227 Ac. [183] Francium was the last element to be discovered in nature, rather than synthesized in the lab, although four of the "synthetic" elements that were discovered later (plutonium, neptunium, astatine, and promethium) were eventually found in trace amounts in nature as well. [184]
The complaint tablet to Ea-nāṣir (UET V 81) [1] is a clay tablet that was sent to the ancient city-state Ur, written c. 1750 BC.The tablet, which measures 11.6 centimetres (4.6 in) high and 5 centimetres (2.0 in) wide, documents a transaction in which Ea-nāṣir, [a] a trader, allegedly sold sub-standard copper to a customer named Nanni.
The seaweed also had another, yet undiscovered, important chemical. One day towards the end of 1811 while Courtois was isolating sodium and potassium compounds from seaweed ash, he discovered iodine after he added sulfuric acid to the seaweed ash. He was investigating corrosion of his copper vessels when he noticed a vapor given off.
On 20 May 1867 he found the mother lode of copper that became the Great Australian Mine. In 1876 the township of Cloncurry was laid out by Surveyor William H Bishop, the same man who laid out the township of Hughenden. Henry worked the Great Australian Mine, bagging and exporting copper ore, until it was sold in 1879.
Alessandro Giuseppe Antonio Anastasio Volta (UK: / ˈ v ɒ l t ə /, US: / ˈ v oʊ l t ə /; Italian: [alesˈsandro ˈvɔlta]; 18 February 1745 – 5 March 1827) was an Italian chemist and physicist who was a pioneer of electricity and power, [1] [2] [3] and is credited as the inventor of the electric battery and the discoverer of methane.
Georg Brandt (26 June 1694 – 29 April 1768) [1] [2] was a Swedish chemist and mineralogist who discovered cobalt c. 1735. He was the first person to discover a metal unknown in ancient times. [3] [4] He is also known for exposing fraudulent alchemists operating during his lifetime. [5]
Copernicus's Toruń birthplace (ul. Kopernika 15, left).Together with no. 17 (right), it forms Muzeum Mikołaja Kopernika.Nicolaus Copernicus was born on 19 February 1473 in the city of Toruń (Thorn), in the province of Royal Prussia, in the Crown of the Kingdom of Poland, [10] [11] to German-speaking parents.