Stjepan Mohorovičić

1880-1980

1933 made a very important theoretical discovery of the positronium (rotational pair of electron and positron).

Mohorovic made pioneering observations of rotor-type circulation in bora. Its existence has been proved in 1969 during the famous Apollo 11 flight to the Moon. Seismic measurements have been carried out by Neil Armstrong and Edwin Aldrin, the first humans to land on the Moon.