IN a letter to this journal last week, Mr. Soddy has discussed the bearing of my theory of the nucleus atom on radio-active ... depending on the detailed structure of the nucleus.

The nucleus is very small compared to the atom as a whole: as electrons are even smaller, most of an atom is empty space the diameter of a nucleus can be 100,000 times less than the diameter of an ...

Everything in the world is made up of atoms. The structure of the atom is what gives an element its chemical and physical properties. Negatively charged particles that spin around the positive ...