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.
Bohr did not discover protons, neutrons, or electrons. Bohr used the energy changes in line emission spectra to develop a model that accounted for discrete energy changes.