jojomayer t1_j7m0q1x wrote
It says carbon has been known since ancient times. What does this mean? How did people know of it? I'm guessing they knew how it affected things?
Belzedar136 t1_j7n8dmt wrote
Well like with steel smelting. You need to add carbon to the iron making g process and they knew you needed charcoal and coal to get that going which is where I assume this comes from ?
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