Rydberg Constant using Hg Discharge tube

Product Description


  • The Determination Of The Rydberg Constant
  • The determination of the constant involved in the spectral series of the hydrogenoid atoms / ions.a 7 −1 constant, 1.097 x 10 m , which appears in the formulae for the wave numbers of lines in atomic spectra and is a function of the rest mass and charge of the electron, the speed of light,



Base : painted base with 3 leveling screws.

Scale : circular scale is graduated 360' in half degrees & is attached to the arm with telescope ,so that it moves when telescope is moved.

Vernier : 30 or 60 divisions of Vernier coincide with 29 (or 59) divisions of the main circular divisions.

Collimator : This horizontal tube has an achromatic lens( 7” F.L.) at one end and a sliding tube with on adjustable vertical slit at the other. The distance between the lens & slit can be changed by a rack & pinion for obtaining parallel rays.

Slit : consists of two sharp edges; one fixed while the other can be moved by a screw provided.

Telescope : it is an astronomical telescope with an achromatic objective of 7” F.L. And a Ramsden's eye piece

Prism Table : two circular plates separated by 3 springs having leveling screws. Its height can be adjusted by a screw on its side. On its top a grating holder & prism holder is mounted.

Vernier : 60/30sec.

SIZE : 6” prism stand, grating holder

2. Hydrogen Discharge tube

3. High Voltage Power Supply (E.H.T.)

4. Stand for Hg Tube.


  • Spectrometer 6 inch
  • Hydrogen Discharge Tube + Stand + Supply

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Rydberg Constant using Hg Discharge tube

Rydberg Constant using Hg Discharge tube

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