Ideas agree with Experiment
Bohr’s picture:
- The only stable orbits of the electrons occur at definite radii.
- When in these orbits, contrary to classical E&M, the electrons do not radiate.
- The radiation we see corresponds to electrons moving from one stable orbit to another.
Experiments (already known before 1912)
- Experiment: Balmer had previously noticed a regularity in the frequencies emitted from hydrogen:
? = ? 0 ( (1/n2) - (1/m2)) where n and m are integers.
- Bohr’s Theory: Fits exactly using the value of h determined from other experimentsPhoton carries energy (=h?) = difference of stable orbits.