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 ...

Physics is the search for and application of rules that can help us understand and predict the world around us. Central to physics are ideas such as energy, mass, particles and waves. Physics ...

Center for Basic Research on Materials, National Institute for Materials Science (NIMS), Tsukuba, Ibaraki 305-0047, Japan ...