Janka hardness test understand which woods are harder than others. Janka hardness test The Janka hardness test (from the Austrian-born emigrant Gabriel Janka, 1864-1932) measures the resistance of a sample of wood to denting and wear. It measures the force required to embed an diameter steel ball halfway into a sample of wood. A common use of Janka hardness ratings is to determine whether a species is suitable for use as flooring. The hardness of wood varies with the direction of the wood grain. Testing on the surface of a plank, perpendicular to the grain, is said to be of "side hardness". Testing
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