Keywords: Umov.jpg Portrait of Nikolay A Umov 1846 1915 Russian physicist and mathematician Π€ΠΎΡΠΎΠΏΠΎΡ ΡΡ Π΅Ρ Π ΠΈΠΊΠΎΠ»Π°Ρ ΠΠ»Π΅ΠΊΡΠ΅Π΅Π²ΠΈΡΠ° Π£ΠΌΠΎΠ²Π° 1846 1915 http //www phys msu su/rus/about/sovphys/ISSUES-2003/6 36 -2003/societies/umov jpg unknown author PD-old Nikolay Umov Portrait photographs of men |