ADVANCED SPECTROMETRY KIT
Item Code : SK024/SK024A
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.
- Four Vernier used to remove eccentric error (almost fully)
- Least count 20 sec. for precise measurement
- Highly stable spectrometer body (weight 8.5 kg approx.)
- Supplied in black wooden box .
- Adjustable optical arms to coincide axis of collimator & telescope.
- Optics aperture 32 mm for better resolution.
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To determine the dispersion & resolving power of a prism.
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To determine the wavelength of sodium light & also determine resolving power of prism using a diffraction grating.
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To determine angular dispersive by grating or prism.
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To determine the refractive index of prism.
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To determine wavelength of mercury spectral lines (optional).
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To verify Cauchy’s equation (using mercury light source).
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To draw graph between wavelength (l) and angle of minimum deviation for various lines from the spectrum of mercury discharge source.
Main scale : Brass, dia. 175mm, 0 – 360°, 1 MSD 1/3°
Least count : 20 seconds
Base size : Wooden, 450 x 300 x 12mm
Objective : Achromatic lens, F = 178mm, Ø 32mm
Slit : German silver with knurled screw
Reticle : 90° cross etched on glass, Ø 21mm
Eyepiece : 15X, Ramsden eyepiece
Vernier : Brass, 4 verniers, (L x W) 60 x 48mm
Base : 220mm dia., Aluminium casting
Prism : Arms (54 x 54 x 54mm), R.I = 1.65
Micrometer slit : Range 0 – 3mm, LC 0.01mm
Wooden box : 490 x 345 x 350mm
Lamp house : MS, 200 x 85mm (LxØ), Aperture (LxW) 20 x 16mm
| S.No. | Item Name | SK024 | SK024A |
|---|---|---|---|
| 1 | Advanced spectrometer | 1 | 1 |
| 2 | Allen key 3mm | 1 | 1 |
| 3 | Boss head square (universal clamp) | 1 | 1 |
| 4 | Clamping rod | 1 | 1 |
| 5 | Diffraction grating (600 lines per mm) | 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 |
