Balmer series/ determination of Rydberg’s constant
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.
Object holder, 5×5 cm
Diffraction grating, 600 lines/mm
Measuring tape, l = 2 m
PHYWE high voltage supply unit with digital display, 10 kV
Tripod base PHYWE
Support rod, stainless steel, 500 mm
Stand tube
Cursors, 1 pair
Meter scale, l = 1000 mm
Insulating support
Spectrum tube, mercury
Spectrum tube, hydrogen
Holders for spectral tubes,1 pair
Cover tube for spectral tubes
Connecting cord, 30 kV, 1000 mm
Right angle clamp expert
Barrel base expert
- 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.
- 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