51 Accidental Inventions that Changed the World by Kimte Guite

Author:Kimte Guite [Kimte Guite]
Language: eng
Format: epub
Publisher: Rupa Publications
Published: 2019-09-30T16:00:00+00:00

Brainstorm more ideas to save paper with your friends. Put them down and start acting on them!

26

Pencils

D o you remember when you first learned to write ABC? What did you use? The most common answer for most of us would be a pencil. The word ‘pencil’ is derived from the Latin word ‘penicillus’ meaning ‘little tail’.

The early form of pencil used by the Romans was called ‘stylus’. The older form of pencils used a lead core. The modern form of pencil was invented by a Frenchman, Nicolas-Jacques Conté (1755–1805) in 1795. The core of the pencil is composed of pure carbon called graphite.

Download

Copyright Disclaimer:
This site does not store any files on its server. We only index and link to content provided by other sites. Please contact the content providers to delete copyright contents if any and email us, we'll remove relevant links or contents immediately.