Cybersecurity refers to the preventative techniques used to protect the integrity of networks, programs and data from attack, damage, or unauthorized access.
Pencils were invented in 1795 by a French scientist named Nicolas-Jacques Conte. He used a mixture of graphite, clay and water baked in a kiln to create the lead of the pencil. He then housed this mixture in a wooden frame for writing. Continue Reading.
15 Je suis un crayon rouge. After the 1917 Soviet revolution, American entrepreneur Armand Hammer was awarded a monopoly for pencil manufacturing in the USSR. 16 More than half of all pencils come from China. In 2004, factories there turned out 10 billion pencils, enough to circle the earth more than 40 times.