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

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 ...

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 ...

The pencil “lead” is actually a mixture of graphite and clay. 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 ...

No.2 pencils are widely used, but you may not know what the number actually refers to. This video explains how pencils developed into their modern form and the significance of the labeled numbers.

The purpose of this project was to stand a pencil on its end using an electronic feedback circuit. Why you ask? We wanted to come up with an idea that demonstrated a useful physics principle in a cool ...