the.com/cobalt
the blue that built batteries before it ever built a single oil painting
means A hard, silvery-grey metallic element (atomic number 27) whose compounds yield an intense, lasting blue, now prized as a key component in rechargeable battery cathodes.
from From the German Kobold, a mischievous goblin of the mines. German silver miners blamed these little spirits for ore that looked valuable but yielded no useful metal — and worse, gave off poisonous, arsenic-laden fumes when smelted. The 'cursed' rock was named for the goblin, and when chemists isolated the metal in the 18th century, the name cobalt stuck. So the blue of glassmakers and battery makers alike still carries the memory of an underground prankster.
- name origin
- German kobold, a goblin miners blamed for poisonous ore
- battery king
- powers most lithium-ion cells in your devices
- glass trick
- tiny amounts make deep blue stained glass
- essential mineral
- vitamin B12 contains a single cobalt atom
- congo grip
- over 70 percent mined in one country
congo cobalt mines — democratic republic of congo produces 70% of world's cobalt, mainly from katanga province
cobalt-60 — radioactive isotope used in medical radiotherapy and industrial sterilization since the 1950s
cobalt blue — pigment used in dutch delftware pottery and chinese porcelain since 14th century