Pencil
Pencil
A pencil is a writing instrument with a thin cylindrical graphite core encased in a protective wooden sheath. Pencils are used for writing or drawing and produce marks via physical abrasion.
History[edit]
The modern pencil was invented in 1795 by Nicholas-Jacques Conte, a scientist serving in the army of Napoleon Bonaparte. The pencil was a necessity of the time as the French Republic was in financial crisis and unable to import graphite sticks from Great Britain, the world's sole supplier.
Types of Pencils[edit]
There are several types of pencils including the standard graphite pencil, charcoal pencil, colored pencil, watercolor pencil, and grease pencil.
Graphite Pencils[edit]
Graphite pencils are the most common type of pencil. They are made of a mixture of clay and graphite and their darkness varies from light grey to black. Their composition allows for smooth writing and drawing.
Charcoal Pencils[edit]
Charcoal pencils are made of charcoal and provide richer blacks than graphite pencils, but they tend to smudge easily and are not erasable.
Colored Pencils[edit]
Colored pencils have a wax-based core with pigment and other fillers. Multiple colors are often blended together.
Watercolor Pencils[edit]
Watercolor pencils can be used dry like ordinary pencils, then moistened with a wet brush to achieve a watercolor effect.
Grease Pencils[edit]
Grease pencils have a softer, crayon-like waxy core that can leave marks on smooth surfaces such as glass or porcelain.
See Also[edit]
References[edit]
<references />
External Links[edit]
- Pencils.com - A comprehensive resource about pencils
|
|
|
This article is a medical stub. You can help WikiMD by expanding it!
-
Pencil
-
Pencil
-
Pencil
-
Pencil
-
Pencil
-
Pencil
-
Pencil
-
Pencil
-
Pencil
-
Pencil
-
Pencil
-
Pencil
Ad. Transform your health with W8MD Weight Loss, Sleep & MedSpa

Tired of being overweight?
Special offer:
Budget GLP-1 weight loss medications
- Semaglutide starting from $29.99/week and up with insurance for visit of $59.99 and up per week self pay.
- Tirzepatide starting from $45.00/week and up (dose dependent) or $69.99/week and up self pay
✔ Same-week appointments, evenings & weekends
Learn more:
- GLP-1 weight loss clinic NYC
- W8MD's NYC medical weight loss
- W8MD Philadelphia GLP-1 shots
- Philadelphia GLP-1 injections
- Affordable GLP-1 shots NYC
- Budget GLP-1 shots
|
WikiMD Medical Encyclopedia |
Medical Disclaimer: WikiMD is for informational purposes only and is not a substitute for professional medical advice. Content may be inaccurate or outdated and should not be used for diagnosis or treatment. Always consult your healthcare provider for medical decisions. Verify information with trusted sources such as CDC.gov and NIH.gov. By using this site, you agree that WikiMD is not liable for any outcomes related to its content. See full disclaimer.
Credits:Most images are courtesy of Wikimedia commons, and templates, categories Wikipedia, licensed under CC BY SA or similar.
Translate this page: - East Asian
中文,
日本,
한국어,
South Asian
हिन्दी,
தமிழ்,
తెలుగు,
Urdu,
ಕನ್ನಡ,
Southeast Asian
Indonesian,
Vietnamese,
Thai,
မြန်မာဘာသာ,
বাংলা
European
español,
Deutsch,
français,
Greek,
português do Brasil,
polski,
română,
русский,
Nederlands,
norsk,
svenska,
suomi,
Italian
Middle Eastern & African
عربى,
Turkish,
Persian,
Hebrew,
Afrikaans,
isiZulu,
Kiswahili,
Other
Bulgarian,
Hungarian,
Czech,
Swedish,
മലയാളം,
मराठी,
ਪੰਜਾਬੀ,
ગુજરાતી,
Portuguese,
Ukrainian

