This Perspective explores how the frequency shifts of atomic spectral lines between isotopes can be effective probes of physics beyond the standard model, when measured to high precision using ...

The structure of the nucleus - CCEA Radioactive decay and half-life - CCEA The dangers and uses of radiation - CCEA Nuclear fission - CCEA Nuclear fusion - CCEA ...

It also tells us that chlorine has 18 neutrons (35 - 17) and, as the number of electrons and protons are equal in a neutral atom, chlorine also has 17 electrons. The relative mass of a nucleus is ...

Bohr's work on atomic structure also laid the foundation ... Lecture in 1922 was a key moment in the history of physics. His model of the atom, built upon quantum theory, fundamentally altered ...