The Curies made radium available to researchers all over the world,
increasing the study of radioactivity and leading to the realization that
one kind of atom may change into another kind, and so must be made up of
smaller parts. These parts were demonstrated by other scientists to be
a small, dense nucleus that contains protons and neutrons and is surrounded
by a cloud of electrons.
See Content Standard G History and
Nature of Science (grades 9-12): Historical Perspectives.
|