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.
In 1913 Bohr proposed his quantized shell model of the atom to explain how electrons can have stable orbits around the nucleus.ecause of the quantization, the electron orbits have fixed sizes and energies. The orbits are labeled by an integer, the quantum number n. With his model, Bohr explained how electrons could jump from one orbit to another only by emitting or absorbing energy in fixed quanta.