Google on Saturday celebrated the 140th birth anniversary of Romanian physicist Stefania Maracineanu with a doodle.

Maracineanu was one of the pioneering women in the discovery and research of radioactivity.

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She was born on June 18, 1882 in Bucharest.

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Her research on Polonium led to what is most likely the first example of artificial radioactivity.

The Doodle features Maracineanu working on Polonium in a laboratory.

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Maracineanu dedicated her time to researching artificial rain.

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Maracineanu graduated with a physical and chemical science degree in 1910.

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Maracineanu enrolled at Sorbonne University in Paris to finish her PhD in Physics.

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