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Eyebrow Pencils
A pencil is a hand-held instrument containing an interior strip of solid material that produces marks used to write and draw, usually on paper. The most common type of pencil is called a lead pencil, even though the grey marking material is not lead but graphite mixed with clay. more...
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Coloured pencils employ pigments, including those used in oil and watercolour paints. Other marking materials are also used, such as charcoal or cosmetics (as in an eyebrow pencil). The marking material is typically contained inside a disposable wooden sheath but is sometimes held in a re-usable mechanical device.
Pencils are distinct from pens which use a liquid marking material, ink
History
The archetypal pencil may have been the ancient Roman stylus, which was a thin metal stick, often made of lead and used for scratching on papyrus. The word pencil comes from the Latin word penicillus which means \"little tail\".
Some time prior to 1565 (some sources say as early as 1500), an enormous deposit of graphite was discovered at the site of Seathwaite Fell near Borrowdale, Cumbria, England. The locals found that it was very useful for marking sheep. This particular deposit of graphite was extremely pure and solid and it could easily be sawn into sticks. This was and remains the only deposit of graphite ever found in this solid form. Chemistry was in its infancy and the substance was thought to be a form of lead. Consequently it was called plumbago (Latin for \"acts like lead\"). The black core of pencils is still sometimes referred to as \"lead\", even though it never contained the element lead. The value of plumbago was soon realised to be enormous, mainly because it could be used to line the moulds for cannon balls, and the mines were taken over by the Crown and guarded. Graphite had to be smuggled out for use in pencils. Because the plumbago was soft, it required some form of case. Plumbago sticks were at first wrapped in string or in sheepskin for stability. The news of the usefulness of these early pencils spread far and wide, attracting the attentions of artists all over the \"known world\".
Although deposits of graphite had been found in other parts of the world, they were not of the same purity and quality as the Borrowdale find, and had to be crushed to remove the impurities, leaving only graphite powder. England continued to enjoy a monopoly on the production of pencils until a method of reconstituting the graphite powder was found. The distinctively square English pencils continued to be made with sticks cut from natural graphite into the 1860s. Today, the town of Keswick, near the original findings of block graphite, has a pencil museum. The first attempt to manufacture graphite sticks from powdered graphite was in Nuremberg, Germany in 1662. They used a mixture of graphite, sulphur and antimony. Though usable they were inferior to the English pencils.
It was the Italians who first thought of wooden holders. An Italian couple in particular named Simonio and Lyndiana Bernacotti were believed to be the ones to create the first blueprints for the modern carpentry pencil for the cause of being able to mark their carpentry pieces, however, their version was instead a flat oval, more compact type of pencil. They did this at first by hollowing out a stick of juniper wood. Shortly thereafter, a superior technique was discovered: two wooden halves were carved, a plumbago stick inserted, and the two halves then glued together—essentially the same method that is in use to this day.
Read more at Wikipedia.org
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