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 Kupala National Theatre Janka Kupala National Theatre Janka Kupala National Theatre (, Minsk) is the oldest theatre of Belarus. Also, the theatre is an object of cultural heritage of Belarus. The building of the theatre was built in 1890 by the project of architects Konstantin Vvedenski and Korol' Kozlovskiy. The main facade looks out onto the square formed by the intersection of Karl Marx and Engel'sa Street. The theatre was opened on September 14, 1920, and it is located in a building of the Minsk provincial theatre, constructed under the project of architects Karol Kozlowski and Konstantin Uvedensky in 1890 by means of