(21 Jul 1694 - 29 Apr 1768)
Swedish chemist who discovered cobalt, the first new metal to be identified since ancient times. He wrote about semimetals, and made a significant study of arsenic and its compounds.
Science Quotes by Georg Brandt (1 quote)
As there are six kinds of metals, so I have also shown with reliable experiments
that there are also six kinds of half-metals. I through my experiments, had the good fortune
to be the discoverer of a new half-metal, namely cobalt regulus, which had formerly been confused with bismuth.
— Georg Brandt
The six metals were gold, silver, copper, iron, lead, tin. The semimetals, in addition to cobalt, were mercury, bismuth, zinc, and the reguluses of antimony and arsenic. Cited as According to Zenzιn, Brandt stated in his diary for 1741, in Mary Elvira Weeks and Henry M. Leicester (ed.), Discovery of the Elements (6th edition, revised and enlarged 1960). Brandt presented his work to the Royal Academy of Sciences, Upsala, as printed in 'Dissertatio de semimetallis' (Dissertation on semi-metals) in Acta Literaria et Scientiarum Sveciae (Journal of Swedish literature and sciences) (1735), 4 1-10.
- - short biography, births, deaths and events on date of Brandt's birth. 21 Jul