OXP-02 Prisms  

Topics

Refraction on Prisms
Dispersion
Minimum of Deflection
Complementary Colour
Fraunhofer Spectroscope

Examples of Investigation and Measurement

Refraction on a prism
On prisms of different material the beam of a laser is refracted. The deflection of the beam is investigated as a function of the incidence angle, the refraction index and the refraction angle of the prisms. By determining the angle of the minimum deflection the refraction index for the specific material of the prism can be evaluated.

Spectrum of white light
By using a white light source a continuous spectrum is generated by a prism and can be observed on a screen. Spatial recombination of the spectrum by a lens leads to the original white light. Blocking a certain colour in the spectrum leads to its complementary colour when recombined.

Fraunhofer prism spectroscope
A model of Fraunhofer€™s apparatus is set up as follows:
Instead of a continuous spectrum the spectral lines of a spectral lamp are used to determine the prism€™s dispersion of different materials. The spectral lines can be observed on a screen.
 
 


Required Equipment

Cat. No.     Qty.    Description
02.0200      1       Profile rail, 200 mm
02.0300      1       Profile rail, 300 mm
02.1022      1       Screen holder, carrier 25
02.1602      1       Optical screen, 80x65, scale
02.2126      1       Mounting plate, click 25, carrier 20
02.2132      3       Mounting plate, click 30, carrier 20
02.6106      1       Adjustment holder, 4 axes, carrier 20
04.0022      1       Achromat f=40, 25.4, click 30
04.0044      1       Front surface mirror, click 25
04.0051      2       Biconvex lens f=100 mm, 25.4, click 30
05.0030      1       High brightness LED lamp, white
05.0106      1       Spectral lamp, slit, power supply
05.0226      1       DIMO 532 (green)
07.0206      1       Active power supply LDD-05
09.1202      1       Prism assembly
09.1204      1       Magnetic carrier with beam block on post