Nikolay Demyanov

Russian chemist (1861–1938).

Born March 27th, 1861 in Tver.

Died March 19th, 1938 at 76 years old in Moscow.

Occupations
academic, chemist, university teacher
Wikipedia

Death is not extinguishing the light; it is only putting out the lamp because the dawn has come. Rabindranath Tagore