Popularyzatorska działalność Jana Jędrzejewicza

The article is a summary of the activities of the amateur astronomer Jan Jędrzejewicz (1835–1887), who popularised science by publishing articles in different newspapers, such as “Wszechświat”, and delivering popular speeches. The article analyses the magazines that Jędrzejewicz published in, the scope of his articles and the ways of explaining complex scientific ideas. The articles are compared to those of other authors, such as Stanisław Kramsztyk and Jan Kowalczyk. The article also discusses the role played by Jędrzejewicz in the popularisation of astronomy and meteorology.