Model No:PY-108
WAVELENGTH OF NA & HG LIGHT USING GRATING
| Parameter | Specification |
|---|---|
| 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 | Metallic 5 meter Measuring Tape. |
| 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. On its top a grating holder & prism holder is mounted. |
2. PRISM 32 X 32 MM DF
3. Mercury Vapour Lamp 80 watt with choke & wooden box having slits fitted.
4. Diffraction Grating 15000 lines/inch
5. Sodium Vapour lamp 35 watt , box and Transformer
