18 July 1898Discovery of PoloniumMarie Sklodowska Curie
Announces polonium with Pierre Curie.
Historical records for Poland in 1898, rendered directly from the World History Database and ordered by month, day and event.
Announces polonium with Pierre Curie.
Announces radium with Pierre Curie and Gustave Bemont.
Finds pitchblende more radioactive than uranium alone.
Shows pitchblende contains a substance far more radioactive than uranium.
Measures uranium minerals while developing the concept of radioactivity.
Uses radioactivity to describe emissions from uranium and thorium.
This page is generated from stored World History Database records matching the exact country and year shown above. Exact duplicate display records are collapsed. Records without a month are listed after the monthly sections. Source provenance varies by record; formal academic citation should be checked against the relevant primary source, archive or specialist historical reference.