Hayyim Selig Slonimski
'''Ḥayyim Selig ben Ya'akov Slonimski ( זֶעלִיג בֶּן יַעֲקֹב סלאָנימסקי}}) (March 31, 1810 – May 15, 1904), also known by his acronym ḤaZaS''' (), was a Hebrew publisher, mathematician, astronomer, inventor, science writer, and rabbi. He was among the first to write books on science for a broad Jewish audience, and was the founder of ''Ha-Tsfira'', the first Hebrew-language newspaper with an emphasis on the sciences. Provided by Wikipedia-
1