№ 1302. The 175th anniversary of birth D.I. Mendeleev (1834-1907), the scientist – chemist.

Dmitry Ivanovich Mendeleyev (1834-1907) is the Russian scientist and public figure, encyclopedist. It is known as the chemist, physicist, economist, technologist, geologist, meteorologist, teacher, aeronaut. In 1869, working over «Chemistry Bases», he has opened one of fundamental laws of nature ? the periodic law of chemical elements. Dmitry Ivanovich also made a big contribution to metrology development. Since 1892 he headed the first scientific metrological establishment of Russia - the Main Board of Weights and Measures (nowadays – VNIIM n.a. D.I.Mendeleyev). Souvenir sheet represents: reference scales of firm “Nemets” of 1895, on which D.I.Mendeleev conducted exact weighings at renewal of standard of mass - pound (1895 - 1898) and nodule rock crystal from collection of minerals of Dmitry Ivanovich. D.I.Mendeleev's photo is given by Metrological museum of Gosstandart of Russia attached to VNIIM of D.I.Mendeleev. Photographer is F.I.Blumbah.