Exp-1 To demonstrate the kerr effect in nitrobenzene solution (only observation).
Exp-2 To measure the light intensity as a function of voltage across the kerr cell using photo detector.
Principle and Working :
Certain materials under the influence of strong electric field become doubly refractive. The effect known as Kerr effect can be observed in this experiment with nitrobenzene solution.
In the present setup, a small glass container mounted with plate capacitor is filled with liquid. The container is kept between two filters placed at 90°. There will be dark field of view on screen initially but after applying electric field, the field of view brightens, because the light beam becomes elliptically polarised when passed through the birefringent liquid.
|Cat No.||Item Name||SK019||SK019A|
|SL801||Polarizer / Analyzer||2||2|
|SW840||Halogen light source||1|
|SE1005||High voltage power supply||1||1|
|SL754||Convex lens in holder||1|
|SLA65||Set of six filter||1|
|SN204||Flexible plug lead,50cm (red)||1||1|
|SN201||Flexible plug lead,50cm (black)||1||1|
|SN1016||Pin hole photodetector||1|