The chemical lead was used by the Romans as lead rods to write on papyrus. These rods left a grey mark just like graphite. Hence, graphite was believed to be a type of lead. In 1564, a graphite deposit was discovered in England, which led to its widespread use for writing. The lead used in …
The chemical lead was used by the Romans as lead rods to write on papyrus. These rods left a grey mark just like graphite. Hence, graphite was believed to be a type of lead. In 1564 a graphite deposit was discovered in England, which led to its widespread use for writing. The lead used in …
