Simcha Blass Simcha Blass Simcha Blass (November 27, 1897 – July 18, 1982; ) was a Polish-Israeli engineer and inventor who developed the drip irrigation system with his son Yeshayahu. Simcha Blass was born in Warsaw, Poland, which was then part of the Russian Empire, to an Orthodox Jewish family. He was active in the Jewish self-defense units organized in Warsaw to defend Jews during the end of World War I. His engineering studies in Warsaw were interrupted by the Polish-Soviet War and completed after that war. During the war, he was recruited to the Polish Army, there he invented for the
Simcha Lieberman lectures on the fruits of his research. In 1992 Rabbi Simcha emigrated from England and settled in the Har Canaan district of Tzfat, a mountain-top city in the Galilee, Israel. He established an institute for the publication of his writings, eventually publishing 20 volumes in the "Bishvilei Oraiso" series. His wife Chava predeceased him. He died on 28 June 2009, aged 79, leaving 11 children. Simcha Lieberman Rabbi Simcha Binem Lieberman (29 December 1929 – 28 June 2009) was an Israeli Talmudic scholar, lecturer at Jews' College, London, and a prolific writer. He was one of the last survivors of