Every Day Carry (EDC) items are essentials that you carry daily, offering convenience and improving efficiency. Among these, ...

Philadelphia inventor Hymen L. Lipman rushed heroically to the aid of mistake-prone schoolchildren, draftsmen and artists everywhere when he secured the patent for the pencil with eraser on this day ...

Plasma irradiation removes graphite from the pencil lead, exposing a thin layer of clay. By controlling the exposure time, the thickness of this layer can be varied to modulate the infrared (IR) ...

Tsukuba, Japan—Nanocarbon materials with pointed geometries, such as graphene and carbon nanotubes, are considered promising candidates as sources for field emission electrons. However, their ...