Physics: Quantum mechanics. Power and intensity of electromagnetic wavefronts; blackbody radiation. Wave/particle duality. Quantization of energy in electromagnetic waves–photons (E=hf). The de Broglie wavelength, momentum, and energy for electrons and other particles with mass. Quantization of energy levels in the Bohr atom. This is a recording of a tutoring session, posted with the student’s permission. These videos are offered on a “pay-what-you-like” basis. You can pay for the use of the videos at my website: www.freelance-teacher.com For a printable document containing the problems discussed in this video series, go to my website. For a list of all the available video series, arranged in suggested viewing order, go to my website. For a playlist containing all the videos in this series, click this link: www.youtube.com (1) Power and intensity of wavefronts (2) Blackbody radiation. A problem (3) Continued (4) Energy, frequency, and wavelength of photons (E=hf). Wave-particle duality for electrons and other particles with mass: de Broglie wavelength, momentum, energy (5) A problem (6) Continued. The Bohr atom (7) Continued (8) A problem (9) Continued