Advanced Spectrometry Kit
The working 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 by a unique angle. A precise spectrum can be determined by measuring the angles at which light is refracted or bent.
Features:
- Main scale & Vernier scale are made of Brass on CNC machine.
- Four Vernier used to remove eccentric error.
- 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 collimeter & telescope.
- Optics aperture 32 mm for better resolution.
Objectives:
- To determine the dispersion & resolving power of the prism.
- To determine the wavelength of sodium light & also determine resolving power of using a diffraction grating.
- To determine angular dispersive by grating or 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
(i) between wavelength ( λ) and minimum 2derivation angle.
(ii) between 1/ λ and minimum angle for prism for various lines from the spectrum of mercury discharge source.
Technical Data:
- Main scale : Brass, dia. 175mm, 0 – 360 ,1 MSD ⅓
- 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, Ramsdens eyepiece
- Vernier : Brass, 4 verniers, (L x W) 60 x 48mm
- Base : 220mm dia., Aluminum 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
Scope of Delivery:
- 1 Advanced spectrometer
- 1 Prism wooden box
- 1 Sodium light source
- 1 Prism
- 1 Diffraction grating
- 1 Micrometer slit
- 1 Eye Magnifier
- 1 Spectrometer wooden box
- 1 Mercury light source (Optional)
- 1 Allen key