In this lesson, students will investigate the nature of radioactivity and the effect of both distance and shielding materials on different radioactive sources using a Geiger-Muller tube with a counter ...

A New Science. The beginnings. The setting ; Rays and radiation ; Becquerel's discovery -- The Curies. Maria Skłodowska ; A consequential meeting ; New elements! -- Rutherford, Soddy, particles, and ...

Over a hundred years on, Marie Curie’s work still powers nuclear medicine, fuels global research, and stands as a data point in the long fight for equity in science. November 7 marks the birthday of ...

All granite is radioactive, even the stuff used to make fancy countertops. But, the red granite at the Capitol is more ...