Friday, February 7, 2014

How to Get the Lead in Pencils

There are fourteen billion pencils which are made in the world yearly, that is enough to circle the world 62 times.  Surprisingly there is no lead in there, just a finely mixed graphit, which an Englishman mistook for lead. Some pencils are  made by hollowing out a stick of Cedar and putting the graphite into it. The English simplified this by having machines that do this today.