Ответ №1
Mitry Ivanovich Mendeleev (27 January [8 February] 1834, Tobolsk — 20 January [2 February], 1907, St. Petersburg) — Russian scientist-polymath: chemist, physical chemist, physicist, metrologist, economist, engineer, geologist, meteorologist, oilman, teacher, balloonist, instrument. Professor of St. Petersburg University; corresponding member in the category of "physical" Imperial St. Petersburg Academy of Sciences. Among the most famous discoveries — the periodic law of chemical elements, one of the fundamental laws of the universe, part and parcel of natural science. The author of the classic work "Fundamentals of chemistry".
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