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Why a graphite is called black lead​

Answer»

ong>Answer:

Graphite didn't come into WIDESPREAD use for writing until after the 1564 discovery of a very PURE graphite deposit in Borrowdale, ENGLAND. At the time, graphite was THOUGHT to be a type of lead and consequently was called black lead or plumbago. ... But lower quality graphite needs help to keep it in a usable form.



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