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 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 the Warsaw Ghetto. Simcha Binem was born in Warsaw, Poland on 29 December 1926 (24 Teveth 5687 in the Hebrew calendar) to his father Rabbi Brachya Lieberman, a notable Gerrer hasid. He received the traditional education in chasidic families, steeped in the study of the Talmud and its commentators. This ended abruptly in 1939 with the Nazi invasion of Poland. With the enclosure of Warsaw