55756 Experimental Set Up has been designed specifically to determine Cauchy's constant by Spectrometer. The set-up consists of Spectrometer, Mercury light source, Prism, Reading lens etc.

The set up is complete in all respect and requires no other apparatus. Practical experience on this set up carries great educative value for Science and Engineering Students.

OBJECT

01 Determination of the variation of refractive index of the material of the prism with wavelength and to verify Cauchy's dispersion formula.

FEATURES

The complete Experimental Set-up consists of the following :
01 Spectrometer standard : 6" dia circle reading 30 seconds. The objectives used in telescope and collimator are achromatic and provided with rack and pinion focussing arrangement. Telescope arm and prism table are provided with fine and coarse adjustment. The prism table is provided with three leveling screws and is engraved with concentric rings & lines. The scales and verniers are of stainless steel and are machine divided. Clamping devices are also provided to lock telescope and collimator after adjustment, with prism clamping device and diffraction grating stand.
02 Mercury light source : Complete with Mercury Vapour lamp 80W along with choke & wooden box with holes with slide covers one each on three sides.
03 Prism : Optically worked with two faces polished, Equilateral, size 38mm x 38mm.
04 Reading lens : 40/50mm diameter with handle.
05 Sprit Level : 60/80mm length.
06 Weight : 14.6 Kg. (Approx.)
07 Strongly supported by detailed Operating Instructions, giving details of Object, Theory, Design procedures, Report Suggestions and Book References.