How did the pencil come from?

In 1564, in a place called Barrodale in England, people discovered a black mineral-graphite. Be

Why is the wood used for pencils soft?

Whenever I sharpen a pencil, I always feel that the wood of the pencil is very soft, much softer tha

Past and present of fountain pen

Archaeologists have discovered in northern Egypt that reed pens were used to write on parchment

About Points

What is the value of the points?100 Points equal to US$1 How to get points?On the Strongink web