PREFACE

This issue of the journal “History of Science and Technology” has been prepared in difficult conditions. In difficult conditions for authors… In difficult conditions for reviewers ... In difficult conditions for the editorial board… In difficult conditions for the whole world in general!!! This issue contains ten articles. The first of these articles came in late 2019, when the world did not know yet these terrible words: Corona virus disease 2019 (COVID-19); severe acute respiratory syndrome Corona virus 2 (SARS-CoV-2)… COVID-19 was first identified in December 2019 in Wuhan, China, and has since spread worldwide, resulting in an ongoing pandemic. As on May 29, 2020, when these lines were written, more than 5 800 000 cases were recorded in 188 countries, killing more than 359 000 people. We hope that humanity will invent a vaccine as soon as possible, and these horrific death statistics will first stop growing and then stop altogether. For this, many events and activities are important, as history shows. Including the history of the development of science and technology, that is the subject area of our publication.