Completed
Hyperfine splitting of ground state of hydrogen atom Enrico Fermi, 1930
Class Central Classrooms beta
YouTube videos curated by Class Central.
Classroom Contents
Spontaneous and Stimulated Emission of Radiation by Professor G Srinivasan
Automatically move to the next video in the Classroom when playback concludes
- 1 Summer course 2018 - A Random walk in astro-physics
- 2 Spontaneous and Stimulated Emission of Radiation Lecture - 02
- 3 Quantum theory of radiation
- 4 The opening sentence of Einstein's 1917 paper:
- 5 But Einstein wanted his quantum theory to give Planck's Law!
- 6 Einstein's profound insight in 1917:
- 7 Definition of the Einstein coefficients in Quantum Mechanics
- 8 Spontaneous Emission
- 9 Stimulated emission
- 10 Absorption and Emission coefficients in terms of the Einstein Coefficients.
- 11 Absorption coefficient alpha
- 12 It is useful to regard stimulated emission as negative absorption .
- 13 Inverted population
- 14 Two-state systems in Quantum Mechanics
- 15 Zeeman splitting of energy levels
- 16 Hyperfine splitting of energy levels
- 17 Fine structure of energy levels of electron in atoms
- 18 Hyperfine Splitting
- 19 Hyperfine splitting of ground state of hydrogen atom Enrico Fermi, 1930
- 20 After some standard steps,
- 21 Radial wave function of Is electron in a hydrogen atom
- 22 Hyperfine splitting of n=1 level of hydrogen atom
- 23 Ammonia molecule
- 24 Electric dipole moment of Ammonia molecule
- 25 Two-state systems in Quantum Mechanics
- 26 Maser
- 27 Ammonia Maser
- 28 Hydrogen Maser
- 29 The Nobel Prize in Physics 1964
- 30 3-level laser
- 31 Celestial Masers
- 32 Next Lecture - The Interstellar Medium
- 33 Q&A
