Spectrometry Kit
Item Code : SK001
Principle and Working:
The operation of a spectrometer is based on the principle that when light falls on an optical device, such as a prism or diffraction grating, each wavelength is refracted or bent at a unique angle. A precise spectrum can be obtained by measuring the angles at which the light is refracted or bent.
- Main scale & vernier scale are made of brass on CNC machine.
- Two vernier used to remove eccentric error.
- Least count 1 min. for measurement.
- Highly stable spectrometer body (weight 6 kg approx.).
- Supplied in black wooden box.
- Adjustable optical arms to coincide axis of collimator & telescope.
- Optics aperture 32 mm for better resolution.
- To determine the dispersion & resolving power of a prism.
- To determine the wavelength of sodium light & also determine resolving power of prism using a diffraction grating.
- To determine angular dispersive power of a prism.
- To determine the refractive index of prism.
- To determine wavelength of mercury spectral lines (optional).
- To verify Cauchy’s equation (using Mercury light source).
- To draw graph between wavelength (λ) and angle of minimum deviation for various lines from the spectrum of mercury discharge source.
Main scale : Brass, dia. 150mm, 0 – 360°, 1 MSD ½°
Least count : 1 minute.
Objective : Achromatic lens, F = 178mm, Ø 32mm
Slit : Brass with knurled screw
Reticle : 90° cross etched on glass, Ø 21mm
Eyepiece : 15X, Ramsden eyepiece 22x23mm (LxØ).
Vernier : Brass, 2 verniers (for optical arms) L = 40mm.
Base : Dia. 175mm, aluminium casting.
Prism :Arms (32 x 32 x 32mm), R.I. 1.65.
Micrometer slit :Range 0 – 3mm, LC 0.01mm.
Wooden box :400 x 320 x 315mm.
Lamp house :MS, 200 x 85mm (LxØ), aperture (LxW) 20 x 16mm.
Grating :50 x 38mm, 15,000 lines/ inch.
| S. No. | Item Name | SK001 | SK001A |
|---|---|---|---|
| 1 | Allen key 3mm | 1 | 1 |
| 2 | Boss head square (universal clamp) | 1 | 1 |
| 3 | Clamping rod | 1 | 1 |
| 4 | Diffraction grating (600 lines per mm) | 1 | 1 |
| 5 | Intermediate spectrometer | 1 | 1 |
| 6 | Magnifier | 1 | 1 |
| 7 | Mercury bulb (125 W) | – | 1 |
| 8 | Mercury light housing | – | 1 |
| 9 | Micrometer slit | 1 | 1 |
| 10 | Power cord (main lead) | 1 | 1 |
| 11 | Power supply for mercury light | – | 1 |
| 12 | Power supply for sodium light | 1 | – |
| 13 | Prism table with grating and prism clamp | 1 | 1 |
| 14 | Prism with wooden box | 1 | 1 |
| 15 | Sodium bulb (35W) | 1 | – |
| 16 | Sodium light housing | 1 | – |
| 17 | Stand base (A-shape) | 1 | 1 |
| 18 | Stand rod | 1 | 1 |
| 19 | Wooden box for spectrometer | 1 | 1 |
