Mikalay Barysyevich

Nikolai Aleksandrovich Borisevich (21 September 1923 – 25 October 2015) was a Soviet and Belarusian physicist and public figure. Borisevich is best known for his 1955 discovery of the stabilization and labilization phenomenon of electronically excited polyatomic molecules, but also developed the first optical filters to demonstrate infrared radiation.

Early life and academic career Nikolai Aleksandrovich Borisevich was born on 21 September 1923 into a peasant family in the village of , in the Minsk Region of what was then the Byelorussian Soviet Socialist Republic within the Soviet Union. During World War II, he served in the Belarusian partisans before later joining the Red Army and serving as an artillery officer at the Battle of Berlin.

Following the end of the war, Borisevich went to the Belarusian State University, graduating from the university's faculty of physics and mathematics in 1950.

In 1969, Borisevich was appointed as president of the National Academy of Sciences of Belarus. He held the position for 18 years, until 1987,

Scientific activity Borisevich was active in several fields of molecular physics, including quantum optics, spectroscopy, and laser science. One of his early achievements, and one of his most famous, was the 1955 discovery of the stabilization and labilization phenomenon of electronically excited polyatomic molecules. He additionally developed optical methods for measuring the temperature of molecules, as well as delayed fluorescence upon thermal excitation. For establishing the science of spectroscopy of complex molecules, he was awarded the 1980 Lenin Prize in science in technology, along with , , and .