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[9] [10] Because the pencil core is still referred to as "lead", or "a lead", many people have the misconception that the graphite in the pencil is lead, [11] and the black core of pencils is still referred to as lead, even though it never contained the element lead.
A typical construction of a ratchet-based mechanical pencil. A mechanical pencil or clutch pencil is a pencil with a replaceable and mechanically extendable solid pigment core called a "lead" / ˈ l ɛ d /. The lead, often made of graphite, is not bonded to the outer casing, and the user can mechanically extend it as its point is worn away from ...
Graphite (/ ˈ ɡ r æ f aɪ t /) is a crystalline allotrope (form) of the element carbon. It consists of many stacked layers of graphene, typically in the excess of hundreds of layers. Graphite occurs naturally and is the most stable form of carbon under standard conditions.
Prismacolor is a brand of professional visual arts supplies originated in 1938 by the Eagle Pencil Company (rebranded to Berol), and now currently manufactured by Newell Brands. Prismacolor products include, colored and graphite pencils, soft pastels , erasers , pencil sharpeners , and cases.
A copying pencil, also an indelible pencil or chemical pencil, [1] is a pencil whose lead contains a dye. The lead is fabricated by adding a dry water-soluble permanent dye to powdered graphite —used in standard graphite pencils—before binding the mixture with clay .
Joseph Dixon (1799–1869) was an inventor, entrepreneur and the founder of what became the Dixon Ticonderoga Company, a well-known manufacturer of pencils in the United States. His fascination with new technologies led to many innovations such as a mirror for a camera that was the forerunner of the viewfinder , a patented double-crank steam ...