Marie Curie was a physicist, chemist and pioneer in the study of radiation. She discovered the elements polonium and radium ...

Letter Published: 17 May 1930 Search for an Inactive Isotope of the Element 84 (Polonium) G. HEVESY & A. GUENTHER Nature 125, 744 (1930) Cite this article ...

The chemical "causes a slowing of the heart and restriction of the airways, leading to death by asphyxiation", said pharmacology expert Prof. Gary Stephens at the University of Reading.

For that reason I made use of an available polonium sample of about .40 mC. for observing the excitation functions of the γ-radiation from light elements bombarded with α-particles.