Romanian Physicist Ștefania Mărăcineanu

Google Doodle: 140th Birth Anniversary Of Romanian Physicist Ștefania Mărăcineanu

Today’s Google Doodle is a tribute to Ștefania Mărăcineanu, the Romanian physicist and pioneer in the discovery and research of radioactivity. Born on 18 June 1882 in Bucharest, today is her 140th birthday and Google wants people to know about her contribution to science.


• Ștefania Mărăcineanu established the link between earthquakes and rainfall
• She worked on polonium, an element that Curie discovered
• She founded the first laboratory in Romania for the study of radioactivity
• Academy of Sciences of Romania recognized her work in 1936

Early Life

Not much is known about her early life. She graduated in physics and chemistry in 1910. She taught science at the Central School for Girls in Bucharest. While teaching, she earned a scholarship from the Romanian Ministry of Science and decided to pursue graduate research at the Radium Institute in Paris.

Romanian Physicist Ștefania Mărăcineanu

Research Work

At the radium institute, she worked under the direction of physicist Marie Curie. She did her Ph.D. thesis on polonium, an element discovered by Curie. While working on the half-life of polonium, she noticed that the half-life was dependent on the metal type polonium was placed … Read the rest