On a table in the Saranac Art Gallery, which was displaying the work of late artist Leslie LePere from Feb. 7 to March 1, ...

More clay in the mixture makes the lead harder. A harder lead has a higher number. Pencils are numbered from 1-3 but most people use a number 2. Harder lead makes a lighter mark and softer lead makes ...

After all, they are both composed entirely of carbon atoms. The main difference between pencil lead and the sparkling gem, which are allotypes (different forms) of carbon atoms, lies in how these ...

Now, in a recent study, researchers from Japan found a simple and low-cost way of tuning the reflectance spectra of pencil ...

Pieces of pencil lead on the floor marked up the new carpeting. Only one teacher enforced the new rule, Nora said, pretty much erasing the ban. Nora’s 17-year-old brother Leo Rodriguez said he ...

National Museum of American History pencil, packaged set National Museum of American History Box of American Lead Pencil Co. Venus Pencils National Museum of American History Wallace Pencil Company ...