SK024 Advanced Spectrometry Kit

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