Remember the first time an adult told you that your lead pencil was not lead? He/she probably told you that because lead is toxic, the "lead" in your pencil was actually graphite. However, the graphite was still called "lead" because it indicated that something was in your pencil that allowed you to write like the former lead substance. That brings up a lot of different uses for graphite. Surprisingly, this material does a lot more than just write on paper in school.
18 March 2019