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???? Energy level diagram / Quantification of the energy levels of atoms ✅ calculation, exercise, electronvolt, energy variation, unit ▶️ Playlist: 1st ???? WAVES AND SIGNALS: • CONVERGING LENS ✅ focus, image, ... ???? Chapters: ???? First year program 1st specialty: The photon. Energy of a photon. Use the expression giving the energy of a photon. Quantification of the energy levels of atoms Use an energy level diagram using the relationships λ = c / nu and ΔE = hc / lambda.