7B Atomic Physics

    • 7B10. Spectra
    • 7B11. Absorption
      • 7B11.24 Sodium Absorption Spectra White light is passed through sodium vapor made by spraying sodium solution over a Bunsen burner before being dispersed by a prism.
      • 7B11.30 Mercury Vapor Shadow A UV lamp shines on a zinc sulfide screen while mercury vapors waft from a heated watchglass. Not advisable to do mercury vapor in a classroom!
      • 7B11.40 Filtered Spectrum Part of a beam of white light is projected through a prism. When a filter is inserted in the beam, the spectrum and transmitted light are compared.
      • 7B11.72 Band Absorption Spectrum Antifreeze (ethylene glycol) in a beaker will produce an absorption band when placed in the beam of white light before dispersion by a holographic grating.
      • 7B11.85 “Vanish” Absorption Shine a He-Ne laser and a solid state laser emitting at 670 nm through a solution of Vanish. The He-Ne laser light will be completely absorbed while the solid state laser light will pass through.
    • 7B13. Resonance Radiation
      • 7B13.42 Projected Mercury Spectrum The weak lines of the projected mercury spectrum are made visible by painting half of a card with fluorescent paint.
      • 7B13.44 Ultraviolet Lines Use cloth or stationary treated with laundry detergents or dyes that fluoresce and show the ultraviolet lines of a mercury light source.
      • 7B13.50 Fluorescence Use a black light to illuminate fluorescent materials.
      • 7B13.55 Luminescence Luminescent paper and UV beads exhibit luminescence when exposed to black light.
    • 7B20. Fine Splitting
    • 7B30. Ionization Potential
    • 7B35. Electron Properties