DETERMINATION OF RYDBERG'S CONSTANT
DETERMINATION OF RYDBERG'S CONSTANT
- Products Details
Object:
1 Determine the diffraction grating constant by means of the mercury spectrum
2 Determine the visible lines of the Balmer series in the hydrogen spectrum, of Rydberg’s constant and of the energy levels.
Principle:
The spectral lines of hydrogen and mercury are examined by means of a diffraction grating. The known wavelength of spectral lines of mercury is used to determine the grating constant. Due to the collision ionization, hydrogen molecule is converted to atomic hydrogen in the spectral tube. Electrons from the hydrogen atoms are excited to higher energy levels through collision with electrons. When they return to lower energy levels, the atoms emit light of different frequency with different colour. The wave lengths of the visible lines of the Balmer series of hydrogen are measured.
System composition:
| 1 pc | Tripod base | P010120 |
| 1 pc | Square base | P010205 |
| 1 pc | Support rod, 500mm*14mm | P020150 |
| 1 pc | Stands rod, 220mm*10mm | P020122 |
| 1 pc | Cover pipe for spectrum tube | P051101 |
| 2 pcs | Cross clamp | P030101 |
| 1 pc | Scale clamp | P030201 |
| 1 pair | Cursors | P010110-02 |
| 2 pcs | Long crocodile clip | P060101 |
| 1 pc | Scale, 600mm | P040106 |
| 1 pc | Measuring tape | P040420 |
| 1 pc | Diffraction grating, 600 lines / mm | P050106 |
| 2 pcs | Connecting lead | PTL908-2H |
| 1 pc | Spectrum tube, hydrogen | P218105 |
| 1 pc | Spectrum tube, mercury | P218108 |
| 1 pc | High voltage power supply | M10-HV531 |
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P010135 Tripod base Dimension: 298mm (W) × 266mm (D) × 35~50mm (H) Max. rod diam. support: Φ14mm | P020195 Support rod Φ14mm × 1000mm |
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P010120 Tripod base Dimension: 176mm (W) × 162mm (D) × 35~50mm (H) Max. rod diam. support: Φ14mm | P020150 Support rod Φ14mm × 500mm |
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| P010205 Square base Dimension: 60mm (W) × 60mm (D) × 50mm (H) Max. rod diam. support: Φ14mm | P020125 Support rod Φ14mm × 250mm |
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| P030101 Cross clamp Max. rod diam. support: Φ14mm | P020122 Stands rod Φ10mm × 220mm |
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P060101 Long crocodile clip Clip to Φ4mm safety socket Length: 280mm 10kV / 1A | P030201 Scale clamp Max. rod diam. support: Φ17mm Max. objuct diam. support: Φ45mm |
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PTL908-2H Connecting lead Φ4mm male to male 0.5mm² 100cm 10kV/1A | P050106 Diffraction grating Number of gratings: 600 lines / mm Gration dimension: 60mm (W) × 60mm (D) |
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P218105 / P218106 Spectrum tube P218105 hydrogen tube P218108 mercury tube | M10-HV531 Power supply Output voltage: 5kV AC Output current: 10mA |
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P010110-02 Cursors | P051101 Tube cover Narrow slit: 80 × 5mm Length: 200mm Diameter: 15mm(innner), 18mm(outer) |
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P040420 Measuring tape Length: 3m | P040106 Scale Length: 600mm |
