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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.
Benefits
- Simple setup for high ranking experiments
- Fundamental Rydberg's constant determined within an hour
- HV power supply with high safety standards makes experimentation safe
Tasks
- Determination of the diffraction grating constant by means of the Hg spectrum.
- Determination of the visible lines of the Balmer series in the H spectrum, of Rydberg's constant and of the energy levels.
Learning objectives
- 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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Article no. 13673-93
1
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Digital learning
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p2510700d .docx
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(en) Versuchsbeschreibung
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