โ–ธโ–ธ
  • ๐Ÿ‡ฌ๐Ÿ‡ง Cobalt
  • ๐Ÿ‡จ๐Ÿ‡ณ ้ˆท
  • ๐Ÿ‡ณ๐Ÿ‡ฑ Kobalt
  • ๐Ÿ‡ซ๐Ÿ‡ท Cobalt
  • ๐Ÿ‡ฉ๐Ÿ‡ช Cobalt
  • ๐Ÿ‡ฎ๐Ÿ‡ฑ ืงื•ื‘ืœื˜
  • ๐Ÿ‡ฎ๐Ÿ‡น Cobalto
  • ๐Ÿ‡ฏ๐Ÿ‡ต ใ‚ณใƒใƒซใƒˆ
  • ๐Ÿ‡ต๐Ÿ‡น Cobalto
  • ๐Ÿ‡ท๐Ÿ‡บ ะšะพะฑะฐะปัŒั‚
  • ๐Ÿ‡ช๐Ÿ‡ธ Cobalto
  • ๐Ÿ‡ธ๐Ÿ‡ช Kobolt

Cobalt: historical information

  • Discoveror: Georg Brandt
  • Place of discovery: Sweden
  • Date of discovery: 1735
  • Origin of name : from the German word "kobald" meaning "goblin" or evil spirit.

Minerals containing cobalt were of value to the early civilisations of Egypt and Mesopotamia for colouring glass deep blue.

Cobalt was announced to be an element by Georg Brandt about 1739 (or possibly 1735). He had been trying to demonstrate that the blue colour of glass was because of a new element, cobalt, rather than bismuth, an element often found in the same locations as cobalt.