1. Lesson 12: Bohr to Heisenberg

2. Bohr El- travel in FIXED ORBITS which are Energy levels
El- can jump from level to level by absorbing and emitting E

4. Heisenberg Studied el- Did thought expmt and used mathematics
El- do not follow rules of “classic physics”
Uncertainty Principle
You can know the position or the momentum of el- , BUT not both (weird!)
To “see” an el-,
you would use small wavelengths of light,
but this light has hi E,
So, when this light hits an el-, you “see” it and at the same time the el- is changed
El- should be thought of as being in ORBITALS: Areas of high probabillity