PLUMBAGO or Graphite Preparation PLUMBAGO (from Lat. plumbum, lead), a name frequently applied to graphite, “Miniran” in sinhala Languge. When Chemistry was in its early days and the graphite was thought to be a form of lead. Because of this, it was called “plumbago” (Latin for “acts like lead”). The black core of pencils is […]
This is a maXa stuff! At last, it’s great to have someone with exposing the nations pride by delivering the rare collection if snaps and infos. Hat off for the effort.