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Balmer series/ determination of Rydberg's constant

Balmer series/ determination of Rydberg's constant

Item no.: P2510700

Experiment Type: Teacher Experiment, Laboratory Experiment

Difficulty Expenditure of Time print
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Principle

The spectral lines of hydrogen and mercury are examined by means of a diffraction grating. The known spectral lines of Hg are used to determine the grating constant. The wave lengths of the visible lines of the Balmer series of H are measured.

Tasks

  1. Determination of the diffraction grating constant by means of the Hg spectrum.
  2. Determination of the visible lines of the Balmer series in the H spectrum, of Rydberg's constant and of the energy levels.

What you can learn about

  • Diffraction image of a diffraction grating
  • Visible spectral range
  • Single electron atom
  • Atomic model according to Bohr
  • Lyman-, Paschen-, Brackett and Pfund Series
  • Energy level
  • Planck's constant
  • Binding energy

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