This 'solar system' model of the atom is the way that most people think about atoms today. It is known as the Rutherford-Bohr model of atomic structure. The neutron was difficult to discover ...

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 ... moving neutrons carry most of the energy from the ...

But a new kind of clock, based not on electrons but on the nucleus of an atom, is on the horizon ... can be triggered using laser light. While most atomic clocks rely on changes in energy levels ...

Bohr’s Model of an Atom: Danish Physicist Niels Bohr received his Ph.D. from the University of Copenhagen in 1911. In 1922, he was awarded the Nobel Prize in Physics for his work on the atom’s ...