Hardness of dislocations, a particular metal's hardness can be controlled. Although seemingly counter-intuitive, as the density of dislocations increases, there are more intersections created and consequently more anchor points. Similarly, as more interstitial atoms are added, more pinning points that impede the movements of dislocations are formed. As a result, the more anchor points added, the harder the material will become. Hardness Hardness is a measure of the resistance to localized plastic deformation induced by either mechanical indentation or abrasion. Some materials (e.g. metals) are harder than others (e.g. plastics, wood). Macroscopic hardness is generally characterized by strong intermolecular bonds, but
Janka Bryl Janka Bryl Janka (Yanka) Bryl (, August 4, 1917 – July 25, 2006) was a Belarusian writer best known for his short stories. He was one of the older generation of Soviet writers who had begun their literary careers in Stalin's time but received a new lease on life in the late 1950s along with such contemporaries as Ivan Shamiakin and Ivan Melezh. His father was a railway worker. In 1922, his family returned to their hometown of Zagorje, which was then in Poland. He was unable to complete his education, due to financial difficulties. In 1939, he was drafted