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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]
The first elemental metal with a clearly identifiable discoverer is cobalt, discovered in 1735 by Georg Brandt, by which time the Scientific Revolution was in full swing. [6] (Even then, cobalt might have been prepared before the 13th century by alchemists roasting and reducing its ore, but,in any case, its distinct nature was not recognised.) [7]
[69]: 153 He showed that compounds of cobalt metal were the source of the blue color in glass, which previously had been attributed to the bismuth found with cobalt. Cobalt became the first metal to be discovered since the pre-historical period.
Note: René Haüy discovered that emeralds and beryls crystals are geometrically identical. He asked Vauquelin for a chemical analysis, and so Vauquelin found a new "earth" (beryllium oxide). Carl Wilhelm Scheele (1742 –1786), discovery of oxygen with Priestley; identification of molybdenum, tungsten, barium, hydrogen, and chlorine.
He is often referred to as the "Father of Cobalt," [3] an unofficial title shared by the province of Ontario's first geologist, Dr. W. G. Miller (1866 - 1925). [ 4 ] Silver had first been discovered near Long Lake (later Cobalt Lake, Ontario), during the construction of the Temiskaming & Northern Ontario Railway (T&NO) from North Bay , by J. H ...
When discovered, one of the radiographers picked up the source with his bare hand to return it to its container, receiving a localized dose of 3,000–7,000 rad (30–70 Gy) to his hand. All three suffered whole body doses of 10–300 rad (0.10–3.00 Gy) from sleeping in the vehicle containing the unshielded source.
W.E. Logan discovered cobalt in 1884 at the future site of the Agaunico Mine, one mile south of Haileybury. [4] The Bank of Ottawa, Cobalt, Ontario. Silver was discovered in the area during the construction of the Temiskaming & Northern Ontario Railway (T&NO) from North Bay to the communities of Haileybury and New Liskeard, north of Cobalt
The two discovered a new element in a molybdenum sample that was used in a cyclotron, the first element to be discovered by synthesis. It had been predicted by Mendeleev in 1871 as eka-manganese. [171] [172] [173] In 1952, Paul W. Merrill found its spectral lines in S-type red giants. [174]