1 Schedule for the concerts in Regina is refreshed on a regular basis. 2  Regina is really one of the best areas for concert tours in America.
1 Niels Bohr suggested that electrons in an atom were restricted to specific orbits around the atoms nucleus. 2  Bohr argued that an electron in a given orbit has a constant energy, thus he named these orbits energy level.
Einsteinâs theory was that electromagnetic radiation (light, for example) has characteristics of both a wave and a stream of particles. The Bohr Model of the Atom In 1913, Niels Bohr used what had recently been discovered about energy to propose his planetary model of the atom. In the Bohr model, the neutrons and protons are contained in a small, dense nucleus, which the electrons orbit in defined spherical orbits. He referred to these orbits as âshellsâ or âenergy levelsâ and designated each by an integer: 1, 2, 3, etc.