In a study published this week in Physical Review E, scientists hung weights from wooden rods and pieces of pencil lead to record the amount of force needed to snap the cylinder. (sciencemag.org)
It is a rich color - close to being a slate, or think... dark pencil lead. (thepurplepaintedlady.com)
It is a rich color — close to being a slate, or think... dark pencil lead. (thepurplepaintedlady.com)