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PENCILS & PENCIL LEAD.
- Source :
-
Chemical & Engineering News . 10/15/2001, Vol. 79 Issue 42, p35. 1p. 2 Color Photographs. - Publication Year :
- 2001
-
Abstract
- Discusses the connection between graphite and lead in pencils. Swedish chemist Carl W. Scheele's determination that black lead was actually a form of carbon; Description of how pencils are made; Types of wood that have been used to make pencils; Indications of the hardness of lead; Historical significance of names stamped on pencils.
Details
- Language :
- English
- ISSN :
- 00092347
- Volume :
- 79
- Issue :
- 42
- Database :
- Academic Search Index
- Journal :
- Chemical & Engineering News
- Publication Type :
- Periodical
- Accession number :
- 5417370
- Full Text :
- https://doi.org/10.1021/cen-v079n042.p035