*1913-Bohr published three papers on atomism.
*1920-Bohr made descriptions of the periodic table.
*1936-Bohr described the nucleus as a compound structure.
*1939-Uranium isotope fission.
This theory was proposed based on experiments to recognize the
fission mechanism, by his colleague O.R. Frisch in Bohr’s lab. The basis for Frisch’s experiment came from indentification of decay products by Otto Hahn and Fritz Strassman. Bohr was traveling to the United States when Frisch was conducting his experiment but Bohr learned of the results while in route and immediately came up with a theory. Bohr’s ideas concluded that the rare uranium isotopes 235 was fissionable by slow neutrons while the common isotope 238 was not. This understanding of unstable fission fragments immediately sparked the idea of using a chain reaction to create large amounts of energy. This would be vital to the development of the atomic bomb in the following years.
*”Correspondence Principle”-Bohr stated that predictions in quantum
mechanics and classical mechanics should match for the most energetic cases.
*Two theories were offered by Bohr and his colleagues at the Niels Bohr
Institue in Copenhagen.
- Copenhagen interpretation of quantum mechanics
- Complementarity-Bohr described as how two things can exist as two distinct phenomenea, each equally important and each defined under different circumstances. An example would be how an electron can behave like a particle and a wave. Both are equally important.
