0
Still curious? Ask our experts.
Chat with our AI personalities
Ross
Rafa
LaoAdd your answer:
Earn +20 pts
How might school be different if the Earth's supply of graphite ran out?
What is referred to as "pencil lead" is actually graphite. Lead is a much too toxic substance to be used in pencils. If the world's graphite supply were top run out there would be no more pencils in school or anywhere else.
What is the commonly used medium for drawing?
Graphite pencils are commonly used as a medium for drawing.
What elements located in group 14 is used for making pencils and carbon?
Confusing question. You don't "make" carbon, but one particular form is used for pencils, graphite.
Where and when was the pencil invented?
Some time before 1565 (some sources say as early as 1500), an enormous deposit of graphite was discovered on the approach to Grey Knotts from the hamlet of Seathwaite in Borrowdale parish, 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. During the Napoleonic Wars, German and English pencils were not available for the French were unable to import the graphite sticks. So in 1795, N. J. Conte (Nicholas Jacques Conté, an officer in Napoleon's army) discovered a method of mixing powdered graphite with clay and forming the mixture into rods that were then fired in a kiln. By varying the ratio of graphite to clay, the hardness of the graphite rod could also be varied.
How were pencils sharpened before the sharpener?
pencils were sharpened using a knife or any sharp blade.
