and today we will talk about a unique figure in general, because this is mykhailo kosach . of course known more generally as the brother of lesya ukrainka, the son of elena pchilka , the nephew of mykhailo drahomanov. what ukrainian society and ukrainian culture stand for, but mykhailo kosach, he lived an unfortunately short life of 34 years, but he managed to do a lot. he graduated after a simple home education immediately entered the fifth grade of the gymnasium kyiv university university in tartu literature defense of a thesis in physics teaches mathematics in the startov girls' gymnasium had a number of technical inventions private associate professor of the department of physics and meteorology of kharkiv university he actually became the founder of the metrological service in kharkiv oblast kharkiv zemstvo at one time approved him the project of building a network of metrological stations at seven of them. mykhailo kosach organized observations and published a number of works on theoretical physics from an outstanding personality of meteorology , ukrainian meteorologis