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 Zissel Ziv Simcha Zissel's funeral, his friend and colleague Rabbi Eliezer Gordon, the Rabbi and Rosh Yeshiva of Telz, said that aside from Simcha Zissel’s greatness in Torah, he had never heard a single word from him that was not related to Torah and to fear of Heaven. Simcha Zissel was not only great in Musar but also in his knowledge of Torah and Talmud. Gordon, who was known as a fiery and tempestuous genius, would repeat his Talmudic thoughts to Simcha Zissel and seek his opinion on them, for he valued Simcha Zissel’s scholarship highly. Gordon said that his friend had