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10 videos · 4 h 22 min
Lecture · MIT
MIT OpenCourseWare · Donald Sadoway
Donald Sadoway's lecture 'Matter/Energy Interactions: Atomic Spectra' works through the Bohr model step by step: force balance (4:20), the Bohr radius (11:08), the ionization energy (18:11) and the electron's speed (23:12), all of this section's ladder. Keep going past 29:53, where Balmer enters and the lecture moves to transition energies (43:48), for Part 6.
Demo · Universitat de València
Laboratorio Física Cuántica Universitat de València
The 1914 Franck–Hertz experiment rebuilt in the University of Valencia's quantum-physics teaching lab, with mercury vapour as in the original, so it is the lesson's own example. Watch the anode current as the accelerating voltage rises: it drops sharply whenever the electrons carry just enough energy to excite a mercury atom, and the even spacing of the drops (6:24) is the rung the lesson puts at 4.9 eV.
Demo · Harvard
Harvard Natural Sciences Lecture Demonstrations
Hydrogen, helium and neon discharge tubes compared with an incandescent tungsten filament: the gases shine only in discrete colours while the filament gives a continuous rainbow. Hydrogen's few visible lines are the Balmer series of this section, so set them beside helium's and neon's busier barcodes.
Lecture · MIT
MIT OpenCourseWare · Robert Field · 2017
The lecture from MIT 5.61 Physical Chemistry (Robert Field, 2017) that goes with Chapter 5. The whole course is in the Lecture Hall.
Lecture · Oxford
University of Oxford · James Binney · 2009–10
The lecture from University of Oxford Quantum Mechanics (James Binney, 2009–10) that goes with Chapter 5. The whole course is in the Lecture Hall.
Course · MIT
MIT OpenCourseWare · Robert Field · 2017
Quantum mechanics as chemists use it, taught by the spectroscopist Robert Field: the photoelectric effect and Compton scattering, boxes and oscillators, hydrogen and many-electron atoms. Strong on spectroscopy, the experimental face of quantization.
Course · Oxford
University of Oxford · James Binney · 2009–10
James Binney's Oxford course, given over Michaelmas Term 2009 and Hilary Term 2010 and built on probability amplitudes and Dirac notation from the very first lecture. Highlights: tunnelling and radioactive decay, the EPR argument and Bell's inequality, spin and the Stern–Gerlach experiment, and a full treatment of hydrogen.
Lecture · Royal Institution
The Royal Institution · Sean Carroll · 2020
Sean Carroll tells the story from Planck and Einstein through Bohr, de Broglie and Schrödinger, then argues that the measurement problem is still open and makes his case for the many-worlds interpretation. Notice where the history ends and his interpretation begins.
Explainer · YouTube
Khan Academy
A clear, chaptered tour of almost everything this session covers: discrete energy levels, the Bohr model and its energy-level diagram, excitation and de-excitation, hydrogen's spectrum, and how absorption lines identify the elements in distant stars. Its short look at orbital shapes previews chapter 16. Watch the energy-level diagram from about 5:37 and keep it in mind for the lab.
Explainer · YouTube
Physics Explained
A patient blackboard walk from Thomson's plum pudding and Rutherford's alpha scattering, through the instability of the nuclear atom, to Bohr's postulates, the quantization of angular momentum, the size of the atom, the energy levels and the visible hydrogen spectrum. Watch it after Part 5 and follow the algebra that turns L = nħ into Eₙ = −13.6 eV/n².